A wakeboarder in the ocean is in the middle of a flip.
A person falls off of his wakeboard.
A wakeboarder in the ocean is in the middle of a flip does not imply he falls off of his wakeboard.
exists p1 x1 x2 x3.(n_middle(x3) & n_ocean(x2) & exists x4.(in(x1,x3) & of(x3,x4) & n_flip(x4)) & in(x1,x2) & n_wakeboarder(x1))
exists e1 p1 x1 x2.(exists s1.(of(s1,x2) & Theme(s1,x1) & a_off(s1)) & n_wakeboard(x2) & of(x2,x1) & n_male(x1) & Topic(e1,p1) & Actor(e1,x1) & v_fall(e1) & n_person(x1))