Fix type mismatch in test

Author: white-gecko

examples/sparqlstore_example.py

@@ -39,8 +39,8 @@
  graph.add((dbr.Brisbane, dbo.populationTotal, Literal(2)))
 
  # EXAMPLE Update Store 2:
- st = SPARQLUpdateStore(query_endpoint="http://localhost:3030/db/sparql", update_endpoint="http://localhost:3030/db/update")
- graph = Graph(store=st, identifier="http://dbpedia.org")
+ update_store = SPARQLUpdateStore(query_endpoint="http://localhost:3030/db/sparql", update_endpoint="http://localhost:3030/db/update")
+ graph = Graph(store=update_store, identifier="http://dbpedia.org")
  graph.add((dbr["Category:Capitals_in_Europe"], RDF.type, SKOS.Concept))
  graph.add((dbr["Category:Holy_Grail"], RDF.type, SKOS.Concept))
  graph.add((dbr["Category:Hospital_ships_of_Japan"], RDF.type, SKOS.Concept))