the williams fj33 is a variation of which engine?
Entity Entity
m.0bqzj8j m.0bqzpr8
Williams FJ33-5A turbofan Williams FJ33-5C turbofan
class entity
engineering.engine m.0c8f78
engineering.engine engineering.engine
Engine Williams FJ33
none none
engineering.engine.variation_of
Variation of
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.engine . 
VALUES ?x1 { :m.0c8f78 } 
?x0 :engineering.engine.variation_of ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND engineering.engine (JOIN engineering.engine.variation_of m.0c8f78))