which material has a child material class of aluminum alloy 2024?
Entity
m.027vj2v
Aluminium
class entity
engineering.material m.04mkrtb
engineering.material engineering.material
Material Aluminum Alloy 2024
none none
engineering.material.subclass
Child material class
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 :engineering.material . 
VALUES ?x1 { :m.04mkrtb } 
?x0 :engineering.material.subclass ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND engineering.material (JOIN engineering.material.subclass m.04mkrtb))