Question: What is the sport that the Japanese play and is played in the National Olympic Stadium?
Answer(s):
answer: Japan national football team

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.03_3d)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.03_3d ns:sports.sports_team_location.teams ?x .
?x ns:sports.sports_team.arena_stadium ns:m.066hn7 . 
}