diff --git a/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/enrich/PP/ordered_sparql_insert_pp.sparql b/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/enrich/PP/ordered_sparql_insert_pp.sparql
index f6f8163..971074e 100644
--- a/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/enrich/PP/ordered_sparql_insert_pp.sparql
+++ b/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/enrich/PP/ordered_sparql_insert_pp.sparql
@@ -57,4 +57,25 @@ WHERE {
             ?s	aocat:has_temporal_coverage ?tc .
         }
     }
+};
+
+PREFIX aocat: <https://www.ariadne-infrastructure.eu/resource/ao/cat/1.1/>
+PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
+INSERT {
+    GRAPH <https://ariadne-infrastructure.eu/api_________::ariadne_plus::pp::fieldworks> {
+        ?nativeLabel skos:prefLabel ?origTemporalNativePeriodName .
+    }
+}
+WHERE {
+    GRAPH <https://ariadne-infrastructure.eu/api_________::ariadne_plus::pp::fieldworks> {
+        ?s rdf:type <https://www.ariadne-infrastructure.eu/resource/ao/cat/1.1/AO_Collection> .
+    	?s aocat:has_temporal_coverage  ?temporalNative .
+        ?temporalNative aocat:has_native_period ?nativeLabel .
+        ?nativeLabel rdfs:label ?origTemporalNativePeriodName .
+        MINUS {
+            ?nativeLabel skos:prefLabel ?origTemporalNativePeriodName .
+        }
+    }
 };
\ No newline at end of file