Question: How many different songwriters have had their songs recorded in London?
SPARQL query: SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/recordedIn> <http://dbpedia.org/resource/London> . ?x <http://dbpedia.org/ontology/writer> ?uri  . }
Answer: There are [914] writers of the singles recorded in London.