which type of video game engine does challenge promode use?
Entity
m.02rq8_0
id Tech
class class entity
cvg.computer_game_engine_family cvg.computer_game_engine m.03gzb86
cvg.computer_game_engine_family cvg.computer_game_engine cvg.computer_game_mod
Video Game Engine Family Video Game Engine challenge promode
none none none
cvg.computer_game_engine_family.engines_in_this_family cvg.computer_videogame.uses_game_engine
Engines in This Family Uses game engine
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.computer_game_engine_family . 
?x1 :type.object.type :cvg.computer_game_engine . 
VALUES ?x2 { :m.03gzb86 } 
?x0 :cvg.computer_game_engine_family.engines_in_this_family ?x1 . 
?x2 :cvg.computer_videogame.uses_game_engine ?x1 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND cvg.computer_game_engine_family (JOIN cvg.computer_game_engine_family.engines_in_this_family (JOIN (R cvg.computer_videogame.uses_game_engine) m.03gzb86)))