how many soundtracks are there in the albums of math rock musical genre?
Value
10
class class entity
music.soundtrack music.genre m.01gbcf
music.soundtrack music.genre music.genre
Soundtrack Musical genre Math rock
count none none
music.genre.albums music.genre.parent_genre
Albums Parent genres
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 (COUNT(?x0) AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :music.soundtrack . 
?x1 :type.object.type :music.genre . 
VALUES ?x2 { :m.01gbcf } 
?x1 :music.genre.albums ?x0 . 
?x1 :music.genre.parent_genre ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(COUNT (AND music.soundtrack (JOIN (R music.genre.albums) (JOIN music.genre.parent_genre m.01gbcf))))