Question: What killed the general who served in the military unit Army of Northern Virginia?
Answer(s):
answer: Pneumonia

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:military.military_person.service ?k .
?k ns:military.military_service.unit ns:m.0fy70 . 
?c ns:people.deceased_person.cause_of_death ?x .
}