Question: Who shot and killed the famous person with Addison's disease?
Answer(s):
answer: Lee Harvey Oswald

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:medicine.notable_person_with_medical_condition.condition ns:m.01xtf2 . 
?c ns:user.alexander.misc.murdered_person.murdered_by ?x .
}