Question: During what year did  the person who was an actor in the movie McKinley at Home, Canton, Ohio  become president?
Answer(s):

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.actor.film ?k .
?k ns:film.performance.film ns:m.02vy7q4 . 
?c ns:government.politician.government_positions_held ?y .
?y ns:government.government_position_held.from ?x .
}