Question: Which university did Obama attend, that is also the publisher of the periodical journal, Columbia Undergraduate Science Journal?
Answer(s):
answer: Columbia University

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.02mjmr)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.02mjmr ns:people.person.education ?y .
?y ns:education.education.institution ?x .
?x ns:book.periodical_publisher.periodicals_published ?c .
?c ns:book.periodical_publisher_period.periodical ns:m.010byn3t . 
}