Question: Which founder of the Chinese Communist Party died on April 28, 1927?
Answer(s):
answer: Li Dazhao

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.02189)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.02189 ns:organization.organization.founders ?x .
?x ns:people.deceased_person.date_of_death "1927-04-28"^^xsd:dateTime . 
}