Question: For what was the subject of the film "Ford: The Man and the Machine" most well-known?
Answer(s):
answer: Businessperson
answer: Business magnate
answer: Industrialist
answer: Inventor
answer: Engineer
answer: Entrepreneur

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.0ngs_xt . 
?c ns:people.person.profession ?x .
}