Question: Who fought in the Gulf War in 1991 that has a population of less 12,592,829?
Answer(s):
answer: Iraq
answer: Saudi Arabia
answer: Australia

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:military.military_conflict.combatants ?y .
?y ns:military.military_combatant_group.combatants ?x .
?x ns:topic_server.population_number ?num .
FILTER (xsd:integer(?num) < 12592829) . 
}