Question: What writers who influenced Charles Dickens are people who were buried prior to 1 June 1885?
Answer(s):
answer: William Shakespeare
answer: Miguel de Cervantes

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:people.deceased_person.date_of_burial ?num .
FILTER (?num < "1885-06-01"^^xsd:dateTime) . 
}