Question: What was the name of the Wright Brothers plane that had the earliest maiden flight?
Answer(s):
answer: 1900 Wright Glider

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 .
}
ORDER BY ?num LIMIT 1