Question: Who can tell me where the river that passes through Salto del Guaira flows?
Answer(s):
answer: South America

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:geography.river.cities ns:m.06xh37 . 
?c ns:location.location.containedby ?x .
}