Question: What city with an exhibition venue that opened in April, 2008 was the pre-war home of Anne Frank?
Answer(s):
answer: Frankfurt

SPARQL query:
#MANUAL SPARQL
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
    ns:m.03d9rk ns:people.person.places_lived ?y .  # ann frank
    ?y ns:people.place_lived.location ?x ;
       ns:people.place_lived.start_date ?start_date .
    ns:m.081pw ns:time.event.start_date ?war_start_date .
    FILTER (xsd:datetime(?start_date) - xsd:datetime(?war_start_date) < 0)?x ns:exhibitions.exhibition_venue.exhibitions_at_this_venue ?c .
?c ns:exhibitions.exhibition_run.opened_on "2008-04-05"^^xsd:dateTime . 
}