Question: The subject of the film Song Without End composed what type of music?
Answer(s):
answer: Opera
answer: Romantic music
answer: Art song
answer: Classical music
answer: Chamber music

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:film.film_subject.films ns:m.0kv02n . 
?c ns:music.artist.genre ?x .
}