who is the designer responsible for designing the fastest amusement park ride as well as the brown rats ride?
(ARGMAX (AND amusement_parks.ride_designer (JOIN (R amusement_parks.ride.designer) (JOIN (R amusement_parks.ride_theme.rides) m.0fjzb))) (JOIN (R amusement_parks.ride.designer) amusement_parks.ride.max_speed))