Question: What city is home to Robin Williams and has co2 emissions of 0.043448524?
Answer(s):
answer: San Francisco

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0dzf_)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0dzf_ 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) >= "2011-01-01"^^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) <= "2011-12-31"^^xsd:dateTime) })
?x ns:location.statistical_region.co2_emissions_industrial ?c .
?c ns:location.co2_emission.emissions "0.043448524" . 
}