Question: Which speaker in a joint session of the United States Congress started the Federal Reserve Board?
Answer(s):
answer: Franklin D. Roosevelt

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.02xmb)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.02xmb ns:organization.organization.founders ?x .
?x ns:event.public_speaker.speeches_or_presentations ?c .
?c ns:event.speech_or_presentation.event ns:m.07wm42 . 
}