Question: Which country that has a CO2 emissions per capita once of 2010 metric ton fought in the first Gulf War?
Answer(s):
answer: Saudi Arabia
answer: Israel
answer: Kuwait
answer: Iraq

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.018w0j)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.018w0j ns:time.event.locations ?x .
?x ns:location.statistical_region.co2_emissions_per_capita ?c .
?c ns:measurement_unit.dated_metric_ton.date "2010"^^xsd:dateTime . 
}