Question: Which films written by Stephen Sommers feature Leo Howard?
Answer(s):
answer: G.I. Joe: The Rise of Cobra

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.05sqlp_)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.05sqlp_ ns:film.actor.film ?y .
?y ns:film.performance.film ?x .
?x ns:film.film.story_by ns:m.01qnt3 . 
}