Question: What county is home to a co2 emission of 0.548767625 and Louisville?
Answer(s):
answer: Cass County

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0x50_)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0x50_ ns:location.location.containedby ?x .
?x ns:location.statistical_region.co2_emissions_total ?c .
?c ns:location.co2_emission.emissions "0.548767625" . 
}