diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/graph/Extractor.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/graph/Extractor.java
index 7baab2683..3daaed47f 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/graph/Extractor.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/graph/Extractor.java
@@ -1,12 +1,3 @@
-/**
- * Creates new Relations (as in eu.dnetlib.dhp.schema.dump.oaf.graph.Relation) from the information in the Entity.
- * The new Relations are created for the datasource in the collectedfrom and hostedby elements and for the context
- * related to communities and research initiative/infrastructures.
- *
- * For collectedfrom elements it creates: datasource -> provides -> result and result -> isProvidedBy -> datasource
- * For hostedby elements it creates: datasource -> hosts -> result and result -> isHostedBy -> datasource
- * For context elements it creates: context <-> isRelatedTo <-> result
- */
 
 package eu.dnetlib.dhp.oa.graph.dump.graph;
 
@@ -31,6 +22,15 @@ import eu.dnetlib.dhp.schema.dump.oaf.graph.Relation;
 import eu.dnetlib.dhp.schema.oaf.KeyValue;
 import eu.dnetlib.dhp.schema.oaf.Result;
 
+/**
+ * Creates new Relations (as in eu.dnetlib.dhp.schema.dump.oaf.graph.Relation) from the information in the Entity.
+ * The new Relations are created for the datasource in the collectedfrom and hostedby elements and for the context
+ * related to communities and research initiative/infrastructures.
+ *
+ * For collectedfrom elements it creates: datasource -> provides -> result and result -> isProvidedBy -> datasource
+ * For hostedby elements it creates: datasource -> hosts -> result and result -> isHostedBy -> datasource
+ * For context elements it creates: context <-> isRelatedTo <-> result
+ */
 public class Extractor implements Serializable {
 
 	public void run(Boolean isSparkSessionManaged,