An surfer airborne over a wave.
A surfer in California riding the waves
Not all surfer is in California.
exists x1 x2 x3.(a_topic(x1) & over(x1,x3) & n_wave(x3) & n_airborne(x1) & of(x1,x2) & n_surfer(x2))
exists e1 x1 x2 x3 x4.(n_wave(x4) & ne_geo_california(x2) & a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & (x1 = x3) & in(x1,x2) & n_surfer(x1))