of the rocket engines, which one's height is listed as 2.2?
Entity
m.02xltfn
RD-280
class literal
spaceflight.rocket_engine 2.2^^http://www.w3.org/2001/XMLSchema#float
spaceflight.rocket_engine type.float
Rocket engine 2.2
none none
spaceflight.rocket_engine.height
Height
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 :spaceflight.rocket_engine . 
VALUES ?x1 { "2.2"^^<http://www.w3.org/2001/XMLSchema#float> } 
?x0 :spaceflight.rocket_engine.height ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND spaceflight.rocket_engine (JOIN spaceflight.rocket_engine.height 2.2^^http://www.w3.org/2001/XMLSchema#float))