Surfer is riding the crest of a nice wave.
The surfer is in the ocean.
if the surfer is riding the crest of a wave, that is in the ocean.
exists e1 s1 x1 x2 x3.(n_crest(x2) & ne_nam_surfer(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & of(x2,x3) & n_wave(x3) & a_nice(s1) & Theme(s1,x3))
exists p1 x1 x2.(n_ocean(x2) & n_surfer(x1) & in(x1,x2))