Question: Which politician involved in the Israeli-Palestinian conflict left government before 1980?
Answer(s):
answer: Anwar Sadat

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0cj5y)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0cj5y ns:time.event.people_involved ?x .
?x ns:government.political_appointer.appointees ?c .
?c ns:government.government_position_held.to ?num .
FILTER (?num < "1980"^^xsd:dateTime) . 
}