A wakeboarder in the ocean is in the middle of a flip.
A wakeboarder is trying new tricks.
A wakeboarder in the middle of a flip isn't necessarily trying a new trick.
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 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_try(e1) & n_trick(x2) & a_new(s1) & Theme(s1,x2) & n_wakeboarder(x1))