Question: Which former Blackstreet members work as singer-songwriters?
Answer(s):
answer: Eric Williams
answer: Edward Theodore Riley
answer: Joseph Stonestreet
answer: Mark Middleton
answer: Sherman Tinsdale
answer: Levi Little
answer: Tony Tyler

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01fm10)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01fm10 ns:music.musical_group.member ?y .
?y ns:music.group_membership.member ?x .
?x ns:people.person.profession ns:m.016z4k . 
}