Question: What movies did Ron Howard direct that debuted at the 2008 BFI London Film Festival?
Answer(s):
answer: Frost/Nixon

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0g2lq)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0g2lq ns:film.director.film ?x .
?x ns:film.film.release_date_s ?c .
?c ns:film.film_regional_release_date.film_regional_debut_venue ns:m.07ybqvv . 
}