diff --git a/target/classes/references/3. Parthenos Entities Model Description v 1.8.docx b/target/classes/references/3. Parthenos Entities Model Description v 1.8.docx
new file mode 100644
index 0000000..dd67438
Binary files /dev/null and b/target/classes/references/3. Parthenos Entities Model Description v 1.8.docx differ
diff --git a/target/classes/references/5. Parthenos Entities Minimal Metadata v 1.8.docx b/target/classes/references/5. Parthenos Entities Minimal Metadata v 1.8.docx
new file mode 100644
index 0000000..137cc5f
Binary files /dev/null and b/target/classes/references/5. Parthenos Entities Minimal Metadata v 1.8.docx differ
diff --git a/target/classes/references/CIDOC CRM_v6.2.2_esIP.pdf b/target/classes/references/CIDOC CRM_v6.2.2_esIP.pdf
new file mode 100644
index 0000000..31a8ce6
Binary files /dev/null and b/target/classes/references/CIDOC CRM_v6.2.2_esIP.pdf differ
diff --git a/target/classes/references/CRMdig3.2.pdf b/target/classes/references/CRMdig3.2.pdf
new file mode 100644
index 0000000..9e5554a
Binary files /dev/null and b/target/classes/references/CRMdig3.2.pdf differ
diff --git a/target/classes/references/CRMpe_v1.8.1.rdfs b/target/classes/references/CRMpe_v1.8.1.rdfs
new file mode 100644
index 0000000..f47b209
--- /dev/null
+++ b/target/classes/references/CRMpe_v1.8.1.rdfs
@@ -0,0 +1,540 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!--
+PARTHENOS Entities CRMpe 1.8.1 Encoded in RDFS
+
+RDFS updated by CNR February 2, 2017
+added PE20_Volatile_Digital_Object as subclass of PE32_Curated_Thing
+
+RDFS updated by CNR January 30, 2017
+corrected PE20, PE21 and PP28i (they contained blanks)
+
+RDFS updated by FORTH-ICS September 19, 2016
+corrected some typos, added PE26, removed PE27, added PP41 and PP42
+
+RDFS created by FORTH-ICS August 19, 2016
+
+Encoding Rules:
+1. The RDF spelling rules do not allow blanks. Hence we have replaced them by underscores.
+   The blank between the concept identifier and concept name is replaced by underscore too.
+   For instance "PE1_Service" or "PP1_currently_offers".
+
+2. RDF does not allow to instantiate properties beginning from a range value.
+   Therefore, each CRMpe property is represented as two RDFS properties.
+   For instance "PP1 currently offers(is currently offered by)" is represented as:
+   "PP1_currently offers" for the domain to range direction and "PP1i_is_currently_offered_by" for the range to domain direction.
+
+-->
+<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" 
+xml:base="http://www.ics.forth.gr/isl/CRMpe/" xml:lang="en">
+
+
+<rdfs:Class rdf:about="PE1_Service">
+	<rdfs:subClassOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E7_Activity"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE2_Hosting_Service">
+	<rdfs:subClassOf rdf:resource="PE1_Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE3_Curating_Service">
+	<rdfs:subClassOf rdf:resource="PE1_Service"/>
+</rdfs:Class>
+
+<!--<rdfs:Class  rdf:about="PE4_Physical_Hosting_Service">
+	<rdfs:subClassOf rdf:resource="PE2_Hosting_Service"/>
+</rdfs:Class>-->
+
+<rdfs:Class  rdf:about="PE5_Digital_Hosting_Service">
+	<rdfs:subClassOf rdf:resource="PE2_Hosting_Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE6_Software_Hosting_Service">
+	<rdfs:subClassOf rdf:resource="PE5_Digital_Hosting_Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE7_Data_Hosting_Service">
+	<rdfs:subClassOf rdf:resource="PE5_Digital_Hosting_Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE8_E-Service">
+	<rdfs:subClassOf rdf:resource="PE1_Service"/>
+</rdfs:Class>
+
+<!--<rdfs:Class  rdf:about="PE9_Physical_Curating_Service">
+	<rdfs:subClassOf rdf:resource="PE3_Curating_Service"/>
+</rdfs:Class> -->
+
+<rdfs:Class  rdf:about="PE10_Digital_Curating_Service">
+	<rdfs:subClassOf rdf:resource="PE3_Curating_Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE11_Software_Curating_Service">
+	<rdfs:subClassOf rdf:resource="PE10_Digital_Curating_Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE12_Data_Curating_Service">
+	<rdfs:subClassOf rdf:resource="PE10_Digital_Curating_Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE13_Software_Computing_E-Service">
+	<rdfs:subClassOf rdf:resource="PE6_Software_Hosting_Service"/>
+	<rdfs:subClassOf rdf:resource="PE8_E-Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE14_Software_Delivery_E-Service">
+	<rdfs:subClassOf rdf:resource="PE6_Software_Hosting_Service"/>
+	<rdfs:subClassOf rdf:resource="PE8_E-Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE15_Data_E-Service">
+	<rdfs:subClassOf rdf:resource="PE7_Data_Hosting_Service"/>
+	<rdfs:subClassOf rdf:resource="PE8_E-Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE16_Curated_Software_E-Service">
+	<rdfs:subClassOf rdf:resource="PE11_Software_Curating_Service"/>
+	<rdfs:subClassOf rdf:resource="PE14_Software_Delivery_E-Service"/>
+	<rdfs:subClassOf rdf:resource="PE13_Software_Computing_E-Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE17_Curated_Data_E-Service">
+	<rdfs:subClassOf rdf:resource="PE12_Data_Curating_Service"/>
+	<rdfs:subClassOf rdf:resource="PE15_Data_E-Service"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE18_Dataset">
+	<rdfs:subClassOf rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE19_Persistent_Digital_Object">
+	<rdfs:subClassOf rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE20_Volatile_Digital_Object">
+	<rdfs:subClassOf rdf:resource="PE32_Curated_Thing"/>
+	<rdfs:subClassOf rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE21_Persistent_Software">
+	<rdfs:subClassOf rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:subClassOf rdf:resource="PE19_Persistent_Digital_Object"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE22_Persistent_Dataset">
+	<rdfs:subClassOf rdf:resource="PE18_Dataset"/>
+	<rdfs:subClassOf rdf:resource="PE19_Persistent_Digital_Object"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE23_Volatile_Software">
+	<rdfs:subClassOf rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:subClassOf rdf:resource="PE20_Volatile_Digital_Object"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE24_Volatile_Dataset">
+	<rdfs:subClassOf rdf:resource="PE18_Dataset"/>
+	<rdfs:subClassOf rdf:resource="PE20_Volatile_Digital_Object"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE25_RI_Consortium">
+	<rdfs:subClassOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E40_Legal_Body"/>
+</rdfs:Class>
+
+
+<rdfs:Class rdf:about="PE26_RI_Project">
+	<rdfs:subClassOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E7_Activity"/>
+</rdfs:Class>
+
+<!--
+<rdfs:Class rdf:about="PE27_Service_Action">
+	<rdfs:subClassOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E7_Activity"/>
+</rdfs:Class>
+-->
+
+<rdfs:Class rdf:about="PE28_Curation_Plan">
+	<rdfs:subClassOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E29_Design_or_Procedure"/>
+</rdfs:Class>
+
+<rdfs:Class rdf:about="PE29_Access_Point">
+	<rdfs:subClassOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E51_Contact_Point"/>
+</rdfs:Class>
+
+<!--
+<rdfs:Class  rdf:about="PE30_Digital_Object_Insert">
+	<rdfs:subClassOf rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D7_Digital_Machine_Event"/>
+	<rdfs:subClassOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E79_Part_Addition"/>
+</rdfs:Class>
+
+<rdfs:Class  rdf:about="PE31_Digital_Object_Remove">
+	<rdfs:subClassOf rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D7_Digital_Machine_Event"/>
+	<rdfs:subClassOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E80_Part_removal"/>
+</rdfs:Class>
+-->
+
+<rdfs:Class  rdf:about="PE32_Curated_Thing">
+	<rdfs:subClassOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E70_Thing"/>
+</rdfs:Class>
+
+<rdf:Property rdf:about="PP1_currently_offers">
+	<rdfs:domain rdf:resource="PE26_RI_Project"/>
+	<rdfs:range rdf:resource="PE1_Service"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P9_consists_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP1i_is_currently_offered_by">
+	<rdfs:domain rdf:resource="PE1_Service"/>
+	<rdfs:range rdf:resource="PE26_RI_Project"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P9i_forms_part_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP2_provided_by">
+	<rdfs:domain rdf:resource="PE1_Service"/>
+	<rdfs:range rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E39_Actor"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P14_carried_out_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP2i_provides">
+	<rdfs:domain rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E39_Actor"/>
+	<rdfs:range rdf:resource="PE1_Service"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P14i_performed"/>
+</rdf:Property>
+
+<!--
+<rdf:Property rdf:about="PP3_requested_by">
+	<rdfs:domain rdf:resource="PE27_Service_Action"/>
+	<rdfs:range rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E39_Actor"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P14_carried_out_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP3i_requests">
+	<rdfs:domain rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E39_Actor"/>
+	<rdfs:range rdf:resource="PE27_Service_Action"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P14i_performed"/>
+</rdf:Property>
+-->
+
+<rdf:Property rdf:about="PP4_hosts_object">
+	<rdfs:domain rdf:resource="PE2_Hosting_Service"/>
+	<rdfs:range rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E70_Thing"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P16_used_specific_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP4i_is_object_hosted_by">
+	<rdfs:domain rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E70_Thing"/>
+	<rdfs:range rdf:resource="PE2_Hosting_Service"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P16i_was_used_for"/>
+</rdf:Property>
+
+<!--<rdf:Property rdf:about="PP5_hosts_physical_object">
+	<rdfs:domain rdf:resource="PE4_Physical_Hosting_Service"/>
+	<rdfs:range rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E18_Physical_Thing"/>
+	<rdfs:subPropertyOf rdf:resource="PP4_hosts_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP5i_is_physical_object_hosted_by">
+	<rdfs:domain rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E18_Physical_Thing"/>
+	<rdfs:range rdf:resource="PE4_Physical_Hosting_Service"/>
+	<rdfs:subPropertyOf rdf:resource="PP4i_is_object_hosted_by"/>
+</rdf:Property>-->
+
+<rdf:Property rdf:about="PP6_hosts_digital_object">
+	<rdfs:domain rdf:resource="PE5_Digital_Hosting_Service"/>
+	<rdfs:range rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+	<rdfs:subPropertyOf rdf:resource="PP4_hosts_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP6i_is_digital_object_hosted_by">
+	<rdfs:domain rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+	<rdfs:range rdf:resource="PE5_Digital_Hosting_Service"/>
+	<rdfs:subPropertyOf rdf:resource="PP4i_is_object_hosted_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP7_hosts_software_object">
+	<rdfs:domain rdf:resource="PE6_Software_Hosting_Service"/>
+	<rdfs:range rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:subPropertyOf rdf:resource="PP6_hosts_digital_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP7i_is_software_object_hosted_by">
+	<rdfs:domain rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:range rdf:resource="PE6_Software_Hosting_Service"/>
+	<rdfs:subPropertyOf rdf:resource="PP6i_is_digital_object_hosted_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP8_hosts_dataset">
+	<rdfs:domain rdf:resource="PE7_Data_Hosting_Service"/>
+	<rdfs:range rdf:resource="PE18_Dataset"/>
+	<rdfs:subPropertyOf rdf:resource="PP6_hosts_digital_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP8i_is_dataset_hosted_by">
+	<rdfs:domain rdf:resource="PE18_Dataset"/>
+	<rdfs:range rdf:resource="PE7_Data_Hosting_Service"/>
+	<rdfs:subPropertyOf rdf:resource="PP6i_is_digital_object_hosted_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP11_curates_volatile_digital_object">
+	<rdfs:domain rdf:resource="PE10_Digital_Curating_Service"/>
+	<rdfs:range rdf:resource="PE20_Volatile_Digital_Object"/>
+	<rdfs:subPropertyOf rdf:resource="PP32_curates"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP11i_was_volatile_digital_object_curated_by">
+	<rdfs:domain rdf:resource="PE20_Volatile_Digital_Object"/>
+	<rdfs:range rdf:resource="PE10_Digital_Curating_Service"/>
+	<rdfs:subPropertyOf rdf:resource="PP32i_is_curated_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP12_curates_volatile_software">
+	<rdfs:domain rdf:resource="PE11_Software_Curating_Service"/>
+	<rdfs:range rdf:resource="PE23_Volatile_Software"/>
+	<rdfs:subPropertyOf rdf:resource="PP11_curates_volatile_digital_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP12i_was_volatile_software_curated_by">
+	<rdfs:domain rdf:resource="PE23_Volatile_Software"/>
+	<rdfs:range rdf:resource="PE11_Software_Curating_Service"/>
+	<rdfs:subPropertyOf rdf:resource="PP11i_was_volatile_digital_object_curated_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP13_curates_volatile_dataset">
+	<rdfs:domain rdf:resource="PE12_Data_Curating_Service"/>
+	<rdfs:range rdf:resource="PE24_Volatile_Dataset"/>
+	<rdfs:subPropertyOf rdf:resource="PP11_curates_volatile_digital_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP13i_was_volatile_dataset_curated_by">
+	<rdfs:domain rdf:resource="PE24_Volatile_Dataset"/>
+	<rdfs:range rdf:resource="PE12_Data_Curating_Service"/>
+	<rdfs:subPropertyOf rdf:resource="PP11i_was_volatile_digital_object_curated_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP14_runs_on_request">
+	<rdfs:domain rdf:resource="PE13_Software_Computing_E-Service"/>
+	<rdfs:range rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P16_used_specific_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP14i_is_run_by">
+	<rdfs:domain rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:range rdf:resource="PE13_Software_Computing_E-Service"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P16i_was_used_for"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP15_delivers_on_request">
+	<rdfs:domain rdf:resource="PE14_Software_Delivery_E-Service"/>
+	<rdfs:range rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P16_used_specific_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP15i_is_delivered_by">
+	<rdfs:domain rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:range rdf:resource="PE14_Software_Delivery_E-Service"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P16i_was_used_for"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP16_has_persistent_digital_object_part">
+	<rdfs:domain rdf:resource="PE19_Persistent_Digital_Object"/>
+	<rdfs:range rdf:resource="PE19_Persistent_Digital_Object"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P106_is_composed_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP16i_is_persistent_digital_object_part_of">
+	<rdfs:domain rdf:resource="PE19_Persistent_Digital_Object"/>
+	<rdfs:range rdf:resource="PE19_Persistent_Digital_Object"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P106i_forms_part_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP17_has_snapshot">
+	<rdfs:domain rdf:resource="PE20_Volatile_Digital_Object"/>
+	<rdfs:range rdf:resource="PE19_Persistent_Digital_Object"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P130_shows_features_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP17i_is_snapshot_of">
+	<rdfs:domain rdf:resource="PE19_Persistent_Digital_Object"/>
+	<rdfs:range rdf:resource="PE20_Volatile_Digital_Object"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P130i_features_are_also_found_on"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP18_has_digital_object_part">
+	<rdfs:domain rdf:resource="PE20_Volatile_Digital_Object"/>
+	<rdfs:range rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P106_is_composed_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP18i_is_digital_object_part_of">
+	<rdfs:domain rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+	<rdfs:range rdf:resource="PE20_Volatile_Digital_Object"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P106i_forms_part_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP19_has_persistent_software_part">
+	<rdfs:domain rdf:resource="PE21_Persistent_Software"/>
+	<rdfs:range rdf:resource="PE21_Persistent_Software"/>
+	<rdfs:subPropertyOf rdf:resource="PP16_has_persistent_digital_object_part"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP19i_is_persistent_software_part_of">
+	<rdfs:domain rdf:resource="PE21_Persistent_Software"/>
+	<rdfs:range rdf:resource="PE21_Persistent_Software"/>
+	<rdfs:subPropertyOf rdf:resource="PP16i_is_persistent_digital_object_part_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP20_has_persistent_dataset_part">
+	<rdfs:domain rdf:resource="PE22_Persistent_Dataset"/>
+	<rdfs:range rdf:resource="PE22_Persistent_Dataset"/>
+	<rdfs:subPropertyOf rdf:resource="PP16_has_persistent_digital_object_part"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP20i_is_persistent_dataset_part_of">
+	<rdfs:domain rdf:resource="PE22_Persistent_Dataset"/>
+	<rdfs:range rdf:resource="PE22_Persistent_Dataset"/>
+	<rdfs:subPropertyOf rdf:resource="PP16i_is_persistent_digital_object_part_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP21_has_software_part">
+	<rdfs:domain rdf:resource="PE23_Volatile_Software"/>
+	<rdfs:range rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:subPropertyOf rdf:resource="PP18_has_digital_object_part"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP21i_is_software_part_of">
+	<rdfs:domain rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:range rdf:resource="PE23_Volatile_Software"/>
+	<rdfs:subPropertyOf rdf:resource="PP18i_is_digital_object_part_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP22_has_release">
+	<rdfs:domain rdf:resource="PE23_Volatile_Software"/>
+	<rdfs:range rdf:resource="PE21_Persistent_Software"/>
+	<rdfs:subPropertyOf rdf:resource="PP17_has_snapshot"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP22i_is_release_of">
+	<rdfs:domain rdf:resource="PE21_Persistent_Software"/>
+	<rdfs:range rdf:resource="PE23_Volatile_Software"/>
+	<rdfs:subPropertyOf rdf:resource="PP17i_is_snapshot_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP23_has_dataset_part">
+	<rdfs:domain rdf:resource="PE24_Volatile_Dataset"/>
+	<rdfs:range rdf:resource="PE18_Dataset"/>
+	<rdfs:subPropertyOf rdf:resource="PP18_has_digital_object_part"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP23i_is_dataset_part_of">
+	<rdfs:domain rdf:resource="PE18_Dataset"/>
+	<rdfs:range rdf:resource="PE24_Volatile_Dataset"/>
+	<rdfs:subPropertyOf rdf:resource="PP18i_is_digital_object_part_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP24_has_dataset_snapshot">
+	<rdfs:domain rdf:resource="PE24_Volatile_Dataset"/>
+	<rdfs:range rdf:resource="PE22_Persistent_Dataset"/>
+	<rdfs:subPropertyOf rdf:resource="PP17_has_snapshot"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP24i_is_dataset_snapshot_of">
+	<rdfs:domain rdf:resource="PE22_Persistent_Dataset"/>
+	<rdfs:range rdf:resource="PE24_Volatile_Dataset"/>
+	<rdfs:subPropertyOf rdf:resource="PP17i_is_snapshot_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP25_is_maintained_by">
+	<rdfs:domain rdf:resource="PE26_RI_Project"/>
+	<rdfs:range rdf:resource="PE25_RI_Consortium"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P15_was_influenced_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP25i_maintains">
+	<rdfs:domain rdf:resource="PE25_RI_Consortium"/>
+	<rdfs:range rdf:resource="PE26_RI_Project"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P15i_influenced"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP28_has_designated_access_point">
+	<rdfs:domain rdf:resource="PE8_E-Service"/>
+	<rdfs:range rdf:resource="PE29_Access_Point"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P1_is_identified_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP28i_is_designated_access_point_of">
+	<rdfs:domain rdf:resource="PE29_Access_Point"/>
+	<rdfs:range rdf:resource="PE8_E-Service"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P1i_identifies"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP29_uses_access_protocol">
+	<rdfs:domain rdf:resource="PE8_E-Service"/>
+	<rdfs:range rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P16_used_specific_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP29i_is_access_protocol_used_by">
+	<rdfs:domain rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D14_Software"/>
+	<rdfs:range rdf:resource="PE8_E-Service"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P16i_was_used_for"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP31_used_curation_plan">
+	<rdfs:domain rdf:resource="PE3_Curating_Service"/>
+	<rdfs:range rdf:resource="PE28_Curation_Plan"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P33_used_specific_technique"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP31i_was_curation_plan_used_by">
+	<rdfs:domain rdf:resource="PE28_Curation_Plan"/>
+	<rdfs:range rdf:resource="PE3_Curating_Service"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P33i_was_used_by"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP32_curates">
+	<rdfs:domain rdf:resource="PE3_Curating_Service"/>
+	<rdfs:range rdf:resource="PE32_Curated_Thing"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP32i_was_curated_by">
+	<rdfs:domain rdf:resource="PE32_Curated_Thing"/>
+	<rdfs:range rdf:resource="PE3_Curating_Service"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP39_is_metadata_for">
+	<rdfs:domain rdf:resource="PE22_Persistent_Dataset"/>
+	<rdfs:range rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P129_is_about"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP39i_has_metadata">
+	<rdfs:domain rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+	<rdfs:range rdf:resource="PE22_Persistent_Dataset"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P129i_is_subject_of"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP40_created_successor_of">
+	<rdfs:domain rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E65_Creation"/>
+	<rdfs:range rdf:resource="PE22_Persistent_Dataset"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P16_used_specific_object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP40i_was_deprecated_by">
+	<rdfs:domain rdf:resource="PE22_Persistent_Dataset"/>
+	<rdfs:range rdf:resource="http://www.cidoc-crm.org/cidoc-crm/E65_Creation"/>
+	<rdfs:subPropertyOf rdf:resource="http://www.cidoc-crm.org/cidoc-crm/P16i_was_used_for"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP41_is_index_of">
+	<rdfs:domain rdf:resource="PE24_Volatile_Dataset"/>
+	<rdfs:range rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP41i_was_indexed_by">
+	<rdfs:domain rdf:resource="http://www.ics.forth.gr/isl/CRMdig/D1_Digital_Object"/>
+	<rdfs:range rdf:resource="PE24_Volatile_Dataset"/>
+</rdf:Property>
+
+<rdf:Property rdf:about="PP42_has_declarative_time">
+	<rdfs:domain rdf:resource="PE1_Service"/>
+	<rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#dateTime"/>
+</rdf:Property>
+
+</rdf:RDF>
\ No newline at end of file