Question: What people who died prior to 10 May 1860 influenced Abraham Lincoln to become President?
Answer(s):
answer: Thomas Paine
answer: Henry Clay

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0gzh)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0gzh ns:influence.influence_node.influenced_by ?x .
?x ns:people.deceased_person.date_of_death ?num .
FILTER (?num < "1860-05-10"^^xsd:dateTime) . 
}