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 940975893..6a1ad9a40 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
@@ -8,47 +8,22 @@ import java.util.*;
 
 import org.apache.spark.SparkConf;
 import org.apache.spark.api.java.function.FlatMapFunction;
-import org.apache.spark.sql.Dataset;
 import org.apache.spark.sql.Encoders;
 import org.apache.spark.sql.SaveMode;
 import org.apache.spark.sql.SparkSession;
 
-import com.google.gson.Gson;
-
-import eu.dnetlib.dhp.oa.graph.dump.DumpProducts;
 import eu.dnetlib.dhp.oa.graph.dump.Utils;
 import eu.dnetlib.dhp.oa.graph.dump.community.CommunityMap;
-import eu.dnetlib.dhp.oa.graph.dump.zenodo.Community;
 import eu.dnetlib.dhp.schema.common.ModelConstants;
-import eu.dnetlib.dhp.schema.common.ModelSupport;
 import eu.dnetlib.dhp.schema.dump.oaf.Provenance;
 import eu.dnetlib.dhp.schema.dump.oaf.graph.Node;
 import eu.dnetlib.dhp.schema.dump.oaf.graph.RelType;
 import eu.dnetlib.dhp.schema.dump.oaf.graph.Relation;
 import eu.dnetlib.dhp.schema.oaf.KeyValue;
-import eu.dnetlib.dhp.schema.oaf.OafEntity;
-import eu.dnetlib.dhp.schema.oaf.Project;
 import eu.dnetlib.dhp.schema.oaf.Result;
 
 public class Extractor implements Serializable {
 
-//	public void run(Boolean isSparkSessionManaged,
-//		String inputPath,
-//		String outputPath,
-//		Class<? extends Result> inputClazz,
-//		String communityMapPath) {
-//
-//		SparkConf conf = new SparkConf();
-//
-//		runWithSparkSession(
-//			conf,
-//			isSparkSessionManaged,
-//			spark -> {
-//				Utils.removeOutputDir(spark, outputPath);
-//				extractRelationResult(
-//					spark, inputPath, outputPath, inputClazz, Utils.getCommunityMap(spark, communityMapPath));
-//			});
-//	}
 
 	public void run(Boolean isSparkSessionManaged,
 		String inputPath,
@@ -68,30 +43,6 @@ public class Extractor implements Serializable {
 			});
 	}
 
-//    private static void extractRelationProjects(SparkSession spark, String inputPath, String outputPath){
-//        Utils.readPath(spark, inputPath, Project.class)
-//                .flatMap((FlatMapFunction<Project, Relation>) project ->{
-//                    List<Relation> relList = new ArrayList<>();
-//                    Optional.ofNullable(project.getCollectedfrom())
-//                            .ifPresent(cfl ->
-//                                    cfl.forEach(cf -> {
-//                                        Provenance provenance = Provenance.newInstance(cf.getDataInfo().getProvenanceaction().getClassname(),
-//                                                cf.getDataInfo().getTrust());
-//
-//                                        relList.add(getRelation(project.getId(), cf.getKey(),
-//                                                Constants.PROJECT_ENTITY, Constants.DATASOURCE_ENTITY, Constants.IS_FUNDED_BY,
-//                                                Constants.FUNDINGS, provenance));
-//                                        relList.add(getRelation(cf.getKey(), project.getId(),
-//                                                Constants.DATASOURCE_ENTITY, Constants.PROJECT_ENTITY, Constants.FUNDS,
-//                                                Constants.FUNDINGS, provenance));
-//                                    }));
-//                    return relList.iterator();
-//                }, Encoders.bean(Relation.class))
-//                .write()
-//                .option("Compression", "gzip")
-//                .mode(SaveMode.Append)
-//                .json(outputPath);
-//    }
 
 	private <R extends Result> void extractRelationResult(SparkSession spark,
 		String inputPath,
@@ -192,8 +143,16 @@ public class Extractor implements Serializable {
 							.newInstance(
 								paction.getClassid(),
 								dinfo.getTrust()))
-					.orElse(Provenance.newInstance(Constants.HARVESTED, Constants.DEFAULT_TRUST)))
-			.orElse(Provenance.newInstance(Constants.HARVESTED, Constants.DEFAULT_TRUST));
+					.orElse(
+						Provenance
+							.newInstance(
+								eu.dnetlib.dhp.oa.graph.dump.Constants.HARVESTED,
+								eu.dnetlib.dhp.oa.graph.dump.Constants.DEFAULT_TRUST)))
+			.orElse(
+				Provenance
+					.newInstance(
+						eu.dnetlib.dhp.oa.graph.dump.Constants.HARVESTED,
+						eu.dnetlib.dhp.oa.graph.dump.Constants.DEFAULT_TRUST));
 		Relation r = getRelation(
 			value.getId(),
 			cf.getKey(), Constants.RESULT_ENTITY, Constants.DATASOURCE_ENTITY,