which martial arts orgunizations are associated with the practice of internal?
Entity Entity
m.0p8qr9s m.02qdkmq
Ken's Kung Fu San Soo Shaolin Temple UK
class class entity
martial_arts.martial_arts_organization martial_arts.martial_art m.02_yl6z
martial_arts.martial_arts_organization martial_arts.martial_art martial_arts.martial_art_category
Martial Arts Organization Martial Art Internal
none none none
martial_arts.martial_arts_organization.martial_arts martial_arts.martial_art.category
Martial Arts Category
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 :martial_arts.martial_arts_organization . 
?x1 :type.object.type :martial_arts.martial_art . 
VALUES ?x2 { :m.02_yl6z } 
?x0 :martial_arts.martial_arts_organization.martial_arts ?x1 . 
?x1 :martial_arts.martial_art.category ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND martial_arts.martial_arts_organization (JOIN martial_arts.martial_arts_organization.martial_arts (JOIN martial_arts.martial_art.category m.02_yl6z)))