Give me the home town of all musical artists who uses Guitar as instrument ?
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/instrument> <http://dbpedia.org/resource/Guitar> . ?x <http://dbpedia.org/ontology/hometown> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/MusicalArtist>}
Guitar