Question: Which county in the US has both Co2 emissions of 0.00033 and is home to Mt. St. Helens?
Answer(s):
answer: Skamania County

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.094xz)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.094xz ns:location.location.containedby ?x .
?x ns:location.statistical_region.co2_emissions_commercial ?c .
?c ns:location.co2_emission.emissions "0.00033" . 
}