Question: Of the movies that Robert Pattinson is in, which had a sequel titled, Harry Potter and the Half-Blood Prince?
Answer(s):
answer: Harry Potter and the Order of the Phoenix

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.062dn7)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.062dn7 ns:film.actor.film ?y .
?y ns:film.performance.film ?x .
?x ns:film.film.sequel ns:m.03hxsv . 
}