Question: What states with state symbol adopetd before 1986 does Tennessee River run through?
Answer(s):
answer: Mississippi
answer: Tennessee
answer: Alabama
answer: Kentucky

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01spb0)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01spb0 ns:location.location.partially_containedby ?x .
?x ns:government.governmental_jurisdiction.official_symbols ?c .
?c ns:location.location_symbol_relationship.date_adopted ?num .
FILTER (?num < "1986"^^xsd:dateTime) . 
}