Question: Who played the Voice of Kitt in the TV show Knight Rider?
Answer(s):
answer: William Daniels

SPARQL query:
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SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:tv.tv_program.theme_song ns:m.0n9cdn6 . 
?c ns:tv.tv_program.regular_cast ?y .
?y ns:tv.regular_tv_appearance.actor ?x .
?y ns:tv.regular_tv_appearance.special_performance_type ns:m.02nsjvf .
?y ns:tv.regular_tv_appearance.character ns:m.05_bhx .
}