what is the input method used in a musical game published by activision publishing, inc.?
Entity
m.02_xfg7
Guitar Hero Guitar
class class entity
cvg.input_method cvg.musical_game m.09j_g
cvg.input_method cvg.musical_game cvg.cvg_publisher
Input Method Musical Game activision publishing, inc.
none none none
cvg.musical_game.input_method cvg.cvg_publisher.games_published
Input Method Games Published
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 :cvg.input_method . 
?x1 :type.object.type :cvg.musical_game . 
VALUES ?x2 { :m.09j_g } 
?x1 :cvg.musical_game.input_method ?x0 . 
?x2 :cvg.cvg_publisher.games_published ?x1 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND cvg.input_method (JOIN (R cvg.musical_game.input_method) (JOIN (R cvg.cvg_publisher.games_published) m.09j_g)))