Question: What is the kind of poetry the person who said "be your own palace, of the world is your jail" writes?
Answer(s):
answer: Metaphysical poets

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:people.person.quotations ns:m.048czpz . 
?c ns:book.author.school_or_movement ?x .
}