A surfer is riding on a breaking wave.
The surfer is in the ocean.
Waves are found in the ocean.
exists e1 x1 x2 x3.(on(e1,x2) & n_wave(x2) & of(x2,x3) & n_breaking(x3) & Actor(e1,x1) & v_ride(e1) & n_surfer(x1))
exists p1 x1 x2.(n_ocean(x2) & n_surfer(x1) & in(x1,x2))