what is the name of the rocket manufacturer produced saturn i and also collaborate with douglas aircraft company on making a rocket with mass over 581844.0?
(AND spaceflight.rocket_manufacturer (AND (JOIN (R spaceflight.rocket.manufacturer) m.0300dc) (JOIN spaceflight.rocket_manufacturer.rockets_manufactured (AND (JOIN spaceflight.rocket.manufacturer m.01cp1t) (ge spaceflight.rocket.mass 581844.0^^http://www.w3.org/2001/XMLSchema#float)))))