Question: Paris Sisters singles are of which language?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/musicalBand> <http://dbpedia.org/resource/The_Paris_Sisters> . ?x <http://dbpedia.org/property/language> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Single>}