Question: Which events of the war that George Washington helped to win ended prior to September 11, 1777?
Answer(s):
answer: Braddock Expedition
answer: Battle of Jumonville Glen
answer: Battle of Princeton
answer: Battle of Long Island
answer: Battle of Harlem Heights
answer: Battle of Fort Duquesne
answer: Fortification of Dorchester Heights
answer: Boston campaign
answer: Battle of Trenton
answer: Battle of Fort Washington
answer: French and Indian War
answer: Battle of Fort Necessity
answer: Landing at Kip's Bay
answer: Battle of the Assunpink Creek
answer: Siege of Boston
answer: Battle of Pell's Point
answer: Battle of White Plains
answer: New York and New Jersey campaign

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.034rd)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.034rd ns:military.military_commander.military_commands ?y .
?y ns:military.military_command.military_conflict ?x .
?x ns:time.event.end_date ?num .
FILTER (?num < "1777-09-11"^^xsd:dateTime) . 
}