which automobile generation has the model volkswagen polo?
Entity Entity Entity Entity
m.025w828 m.025w80k m.025w81l m.025w80x
Volkswagen Polo Mk1 Volkswagen Polo Mk4 Volkswagen Polo Mk2 Volkswagen Polo Mk3
class entity
automotive.generation m.020sg1
automotive.generation automotive.model
Automobile generation Volkswagen Polo
none none
automotive.generation.model
Model
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 :automotive.generation . 
VALUES ?x1 { :m.020sg1 } 
?x0 :automotive.generation.model ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND automotive.generation (JOIN automotive.generation.model m.020sg1))