Question: At what organization, founded after 1402, did Rudolf Virchow conduct his research?
Answer(s):
answer: Humboldt University of Berlin

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.011kz4)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.011kz4 ns:people.person.employment_history ?y .
?y ns:business.employment_tenure.company ?x .
?x ns:organization.organization.date_founded ?num .
FILTER (?num > "1402"^^xsd:dateTime) . 
}