Question: What is the location of the marriage of the famous person who had an Aortic valve replacement?
Answer(s):
answer: St. Helena

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.0476hw . 
?c ns:people.person.spouse_s ?y .
?y ns:people.marriage.location_of_ceremony ?x .
}