in the exhibition type film props exhibition what is the exhibition subject?
Entity
m.078ffw
Harry Potter literary series
class class entity
exhibitions.exhibition_subject exhibitions.exhibition m.050_4st
exhibitions.exhibition_subject exhibitions.exhibition exhibitions.type_of_exhibition
Exhibition subject Exhibition Film props exhibition
none none none
exhibitions.exhibition_subject.exhibitions_created_about_this_subject exhibitions.exhibition.exhibition_types
Exhibitions created about this subject Exhibition type(s)
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 :exhibitions.exhibition_subject . 
?x1 :type.object.type :exhibitions.exhibition . 
VALUES ?x2 { :m.050_4st } 
?x0 :exhibitions.exhibition_subject.exhibitions_created_about_this_subject ?x1 . 
?x1 :exhibitions.exhibition.exhibition_types ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND exhibitions.exhibition_subject (JOIN exhibitions.exhibition_subject.exhibitions_created_about_this_subject (JOIN exhibitions.exhibition.exhibition_types m.050_4st)))