Question: Find the persident that gave a speech at the 70th anniversary of D-day, where did this person live?
Answer(s):
answer: Chicago
answer: New York City
answer: Honolulu
answer: Jakarta
answer: White House
answer: Washington, D.C.

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:event.public_speaker.speeches_or_presentations ?k .
?k ns:event.speech_or_presentation.event ns:m.010r041_ . 
?c ns:people.person.places_lived ?y .
?y ns:people.place_lived.location ?x .
FILTER(NOT EXISTS {?y ns:people.place_lived.end_date ?sk0} || 
EXISTS {?y ns:people.place_lived.end_date ?sk1 . 
FILTER(xsd:datetime(?sk1) >= "2015-08-10"^^xsd:dateTime) })
FILTER(NOT EXISTS {?y ns:people.place_lived.start_date ?sk2} || 
EXISTS {?y ns:people.place_lived.start_date ?sk3 . 
FILTER(xsd:datetime(?sk3) <= "2015-08-10"^^xsd:dateTime) })
}