what type of rocket engine runs on liquid hydrogen and delivers a thrust in vacuum not exceeding 1.96e+06?
Entity Entity Entity Entity Entity
m.07kfw0m m.02xltbl m.026xrt0 m.026rhjc m.034_q7
RD-0146 RD-350 HM7B Vinci Rocketdyne J-2
class literal entity
spaceflight.bipropellant_rocket_engine 1.96e+06^^http://www.w3.org/2001/XMLSchema#float m.0g0nz
spaceflight.bipropellant_rocket_engine type.float spaceflight.rocket_engine_fuel
Bipropellant rocket engine 1.96e+06 Liquid hydrogen
none < none
spaceflight.rocket_engine.thrust_vacuum spaceflight.rocket_engine_fuel.rocket_engines
Thrust (vacuum) 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.bipropellant_rocket_engine . 
FILTER (?x1 < "1.96e+06"^^<http://www.w3.org/2001/XMLSchema#float>)
VALUES ?x2 { :m.0g0nz } 
?x0 :spaceflight.rocket_engine.thrust_vacuum ?x1 . 
?x2 :spaceflight.rocket_engine_fuel.rocket_engines ?x0 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND spaceflight.bipropellant_rocket_engine (AND (lt spaceflight.rocket_engine.thrust_vacuum 1.96e+06^^http://www.w3.org/2001/XMLSchema#float) (JOIN (R spaceflight.rocket_engine_fuel.rocket_engines) m.0g0nz)))