what material is the roller coaster in galaxyland made of?
Entity
m.02yjlh
Steel
class class entity
amusement_parks.roller_coaster_material amusement_parks.roller_coaster m.05sb9f
amusement_parks.roller_coaster_material amusement_parks.roller_coaster amusement_parks.park
Roller Coaster Material Roller Coaster Galaxyland
none none none
amusement_parks.roller_coaster_material.roller_coasters amusement_parks.ride.park
Roller Coasters Park
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 :amusement_parks.roller_coaster_material . 
?x1 :type.object.type :amusement_parks.roller_coaster . 
VALUES ?x2 { :m.05sb9f } 
?x0 :amusement_parks.roller_coaster_material.roller_coasters ?x1 . 
?x1 :amusement_parks.ride.park ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND amusement_parks.roller_coaster_material (JOIN amusement_parks.roller_coaster_material.roller_coasters (JOIN amusement_parks.ride.park m.05sb9f)))