what rocket engine designer made the design for the rd-302?
Entity
m.02p_3s6
NPO Energomash
class entity
spaceflight.rocket_engine_designer m.02xltd2
spaceflight.rocket_engine_designer spaceflight.bipropellant_rocket_engine
Rocket engine designer RD-302
none none
spaceflight.rocket_engine.designed_by
Designed by
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_designer . 
VALUES ?x1 { :m.02xltd2 } 
?x1 :spaceflight.rocket_engine.designed_by ?x0 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND spaceflight.rocket_engine_designer (JOIN (R spaceflight.rocket_engine.designed_by) m.02xltd2))