Question: Which ruler was the topic of the sculpture Diocletien Vaux1?
Answer(s):
answer: Roman emperor

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:common.topic.image ns:m.0h05b4z . 
?c ns:user.robert.roman_empire.roman_emperor.title ?x .
}