are there any presidents that graduated from princeton university and if so can you list them?
Entity Entity Entity
m.0424m m.0d3k14 m.083q7
James Madison John F. Kennedy Woodrow Wilson
class class entity
government.us_president education.education m.05zl0
government.us_president education.education education.university
US President Education Princeton University
none none none
people.person.education education.educational_institution.students_graduates
Education Students/Graduates
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX : <http://rdf.freebase.com/ns/> 
SELECT (?x0 AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :government.us_president . 
?x1 :type.object.type :education.education . 
VALUES ?x2 { :m.05zl0 } 
?x0 :people.person.education ?x1 . 
?x2 :education.educational_institution.students_graduates ?x1 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND government.us_president (JOIN people.person.education (JOIN (R education.educational_institution.students_graduates) m.05zl0)))