Question: Which of the superbowls won by the Baltmore Ravens ended after January 20, 2013?
Answer(s):
answer: Super Bowl XLVII

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01ct6)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01ct6 ns:sports.sports_team.championships ?x .
?x ns:time.event.end_date ?num .
FILTER (?num > "2013-01-20"^^xsd:dateTime) . 
}