of the bipropellant rocket engines that uses oxidizer of lox, which ones have a chamber pressure of less than 97.0?
(AND spaceflight.bipropellant_rocket_engine (AND (JOIN spaceflight.bipropellant_rocket_engine.oxidizer m.01tm_5) (lt spaceflight.bipropellant_rocket_engine.chamber_pressure 97.0^^http://www.w3.org/2001/XMLSchema#float)))