Question: Which of the celebrities dated by Brody Jenner ended a regular TV appearance before 2007?
Answer(s):
answer: Kristin Cavallari

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.026_dq6)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.026_dq6 ns:base.popstra.celebrity.dated ?y .
?y ns:base.popstra.dated.participant ?x .
?x ns:tv.tv_personality.tv_regular_appearances ?c .
?c ns:tv.tv_regular_personal_appearance.to ?num .
FILTER (?num < "2007"^^xsd:dateTime) . 
}