Question: Which organization founded in 1977 did Ayrton Senna drive for?
Answer(s):
answer: Williams F1

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.012pxw)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.012pxw ns:base.formula1.formula_1_driver.team_member ?y .
?y ns:base.formula1.formula_1_team_member.team ?x .
?x ns:organization.organization.date_founded "1977"^^xsd:dateTime . 
}