what type of fuel ran the engine on rs-27a?
Entity Entity Entity Entity Entity
m.021vvd m.02qvz m.04bhf m.0p6_ m.0g0nz
RP-1 Ethanol Kerosene Ammonia Liquid hydrogen
class class class entity
spaceflight.rocket_engine_fuel spaceflight.bipropellant_rocket_engine spaceflight.rocket_engine_status m.07tczt
spaceflight.rocket_engine_fuel spaceflight.bipropellant_rocket_engine spaceflight.rocket_engine_status spaceflight.rocket_engine
Rocket engine fuel Bipropellant rocket engine Rocket engine development status RS-27A
none none none none
spaceflight.rocket_engine_fuel.rocket_engines spaceflight.rocket_engine_status.rocket_engines spaceflight.rocket_engine_status.rocket_engines
Rocket engines Rocket engines Rocket engines
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_fuel . 
?x1 :type.object.type :spaceflight.bipropellant_rocket_engine . 
?x2 :type.object.type :spaceflight.rocket_engine_status . 
VALUES ?x3 { :m.07tczt } 
?x0 :spaceflight.rocket_engine_fuel.rocket_engines ?x1 . 
?x2 :spaceflight.rocket_engine_status.rocket_engines ?x1 . 
?x2 :spaceflight.rocket_engine_status.rocket_engines ?x3 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x0 != ?x3 && ?x1 != ?x2 && ?x1 != ?x3 && ?x2 != ?x3  )
}
}
(AND spaceflight.rocket_engine_fuel (JOIN spaceflight.rocket_engine_fuel.rocket_engines (JOIN (R spaceflight.rocket_engine_status.rocket_engines) (JOIN spaceflight.rocket_engine_status.rocket_engines m.07tczt))))