Question: What celebrity was married to Phil Harris and died before 1998-05-09?
Answer(s):
answer: Marcia Ralston

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01mgdgm)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01mgdgm ns:people.person.spouse_s ?y .
?y ns:people.marriage.spouse ?x .
?y ns:people.marriage.type_of_union ns:m.04ztj .
?x ns:people.deceased_person.date_of_death ?num .
FILTER (?num < "1998-05-09"^^xsd:dateTime) . 
}