Question: Who invented & currently leads Facebook & Wikipedia respectively?
Answer(s):
answer: Mark Zuckerberg
answer: Chris Hughes

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0hmyfsv)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0hmyfsv ns:organization.organization.founders ?x .
?x ns:kg.object_profile.prominent_type ns:business.board_member . 
}