Question: What television series prior to 7-14-1981 was Mark Harmon star in?
Answer(s):
answer: Eleanor and Franklin: The White House Years

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.037gjc)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.037gjc ns:tv.tv_actor.starring_roles ?y .
?y ns:tv.regular_tv_appearance.series ?x .
?x ns:film.film.initial_release_date ?num .
FILTER (?num < "1981-07-14"^^xsd:dateTime) . 
}