Question: Who is the actor who appeared in American Pie Presents: The Book of Love and who was married to Britney Spears?
Answer(s):
answer: Kevin Federline

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.015f7)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.015f7 ns:people.person.spouse_s ?y .
?y ns:people.marriage.spouse ?x .
?y ns:people.marriage.type_of_union ns:m.04ztj .
?x ns:film.actor.film ?c .
?c ns:film.performance.film ns:m.05z_l73 . 
}