Question: What is the person, that Marcus Vitruvius Pollio dedicated his/her work to, known for?
Answer(s):
answer: Roman emperor
answer: Politician

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:media_common.dedicatee.dedications ?k .
?k ns:media_common.dedication.dedicated_by ns:m.0813l . 
?c ns:people.person.profession ?x .
}