Question: Who was the author of Rip Van Winkle who influenced Charles Dickens?
Answer(s):
answer: Washington Irving

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01v9724)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01v9724 ns:influence.influence_node.influenced_by ?x .
?x ns:film.writer.film ns:m.02qlltk . 
}