Question: What schools were attended by the author of  Mathematical principles of natural philosophy?
Answer(s):
answer: Trinity College, Cambridge
answer: The King's School, Grantham

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SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:book.author.book_editions_published ns:m.04v0x69 . 
?c ns:people.person.education ?y .
?y ns:education.education.institution ?x .
}