Question: The artist who embarked on a concert tour called Hannah Montana: World Tour 201/2011 was engaged to whom?
Answer(s):
answer: Liam Hemsworth

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:music.artist.concert_tours ns:m.0cg4kh5 . 
?c ns:celebrities.celebrity.sexual_relationships ?y .
?y ns:celebrities.romantic_relationship.celebrity ?x .
?y ns:celebrities.romantic_relationship.relationship_type ns:m.02_99rl .
}