which bipropellant rocket engine uses the fuel kerosene and has a dry mass less than 9300.0?
(AND spaceflight.bipropellant_rocket_engine (AND (JOIN spaceflight.bipropellant_rocket_engine.fuel m.04bhf) (lt spaceflight.rocket_engine.dry_mass 9300.0^^http://www.w3.org/2001/XMLSchema#float)))