Someone is in a speed boat on the water.
someone is on a boat.
boat is always on the water.
exists p1 x1 x4.(n_water(x4) & exists x2 x3.(in(x1,x2) & on(x2,x4) & n_boat(x2) & of(x2,x3) & n_speed(x3)) & n_person(x1))
exists p1 x1.(exists x2.(on(x1,x2) & n_boat(x2)) & n_person(x1))