Question: What was the Wright Brothers' plane called and which model of aircraft went on its initial flight post 1902-09-19?
Answer(s):
answer: Wright Model B
answer: Wright Model C

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0fzv_)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0fzv_ ns:aviation.aircraft_manufacturer.aircraft_models_made ?x .
?x ns:aviation.aircraft_model.maiden_flight ?num .
FILTER (?num > "1902-09-19"^^xsd:dateTime) . 
}