A surfer flies over the wave.
A surfer on a surfboard in mid air.
If a surfer is over the wave, that means he is in the mid air.
exists e1 x1 x2.(n_wave(x2) & over(e1,x2) & Actor(e1,x1) & v_fly(e1) & n_surfer(x1))
exists s1 x1 x2 x3.(a_topic(x1) & on(x1,x2) & in(x2,x3) & n_air(x3) & a_mid(s1) & Theme(s1,x3) & n_surfboard(x2) & n_surfer(x1))