Question: Who was the 28th US president that started the federal reserve board?
Answer(s):
answer: Woodrow Wilson

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:government.us_president.presidency_number "28" . 
}