Question: In which Super Bowls did the Dallas Cowboys beat the Buffalo Bills?
Answer(s):
answer: Super Bowl XXVII
answer: Super Bowl XXVIII

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.02896)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.02896 ns:sports.sports_team.championships ?x .
?x ns:sports.sports_championship_event.runner_up ns:m.01c_d . 
}