Question: What are the ethnicities of the producer of the work titled "Racing Dreams"?
Answer(s):
answer: Samoan American
answer: African American

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:tv.tv_producer.tv_episodes_produced ?k .
?k ns:tv.tv_producer_episode_credit.episode ns:m.0k13m9w . 
?c ns:people.person.ethnicity ?x .
}