Question: Name the colleges that the academic advisor of Mahmoud Hessaby had taught during his career.?
Answer(s):
answer: Institute for Advanced Study
answer: ETH Zurich
answer: University of Zurich
answer: Charles University in Prague
answer: Leiden University

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:education.academic.advisees ns:m.015418 . 
?c ns:people.person.employment_history ?y .
?y ns:business.employment_tenure.company ?x .
?x ns:common.topic.notable_types ns:m.01y2hnl .
}