Update the description of vocab.mappings (from local vocabulary to global vocabulary); Mapping rules required by the example query are included

Author: chengsijin0817

ExampleFederation.ttl

@@ -46,3 +46,9 @@ ex:europaSPARQL
 #      fd:interface [ a                  fd:SPARQLEndpointInterface ;
 #                     fd:endpointAddress <http://dbpedia.org/sparql> ] ;
 #      fd:vocabularyMappingsFile "dbpedia/vocabularyMappings.nt" .
+
+#ex:wikidataSPARQLWithVocabMappings
+#      a            fd:FederationMember ;
+#      fd:interface [ a                  fd:SPARQLEndpointInterface ;
+#                     fd:endpointAddress <https://query.wikidata.org/sparql> ];
+#                     fd:vocabularyMappingsFile "wikidata/vocabularyMappings.nt" .

dbpedia/vocabularyMappings.nt

@@ -1,3 +1,2 @@
-<http://data.europa.eu/euodp/jrc-names/Adam_Maher> <http://www.w3.org/2002/07/owl#sameAs> <http://dbpedia.org/resource/Adam_Maher> .
-<http://www.wikidata.org/entity/P19> <http://www.w3.org/2002/07/owl#equivalentProperty> <http://dbpedia.org/ontology/birthPlace> .
-#<http://schema.org/birthPlace> <http://www.w3.org/2002/07/owl#equivalentProperty> <http://dbpedia.org/ontology/birthPlace> .
+<http://dbpedia.org/ontology/Artist> <http://www.w3.org/2002/07/owl#equivalentClass> <https://schema.org/artist> .
+<http://dbpedia.org/ontology/birthPlace> <http://www.w3.org/2002/07/owl#equivalentProperty> <https://schema.org/birthPlace> .

wikidata/vocabularyMappings.nt

@@ -0,0 +1,2 @@
+<http://www.wikidata.org/prop/direct/P106> <http://www.w3.org/2002/07/owl#equivalentProperty> <https://schema.org/hasOccupation> .
+<http://www.wikidata.org/entity/Q1028181> <http://www.w3.org/2000/01/rdf-schema#subClassOf> <https://schema.org/artist> .