Question: Who wrote the singles on the Main Course?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/album> <http://dbpedia.org/resource/Main_Course> . ?x <http://dbpedia.org/property/writer> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Single>}
Answer: The writers of the singles on the Main Course album are [Barry Gibb, Maurice Gibb, Robin Gibb].