A surfer is riding a wave.
A surfer is in Laguna Beach.
A wave does not have to be in Laguna Beach.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_wave(x2) & n_surfer(x1))
exists p1 x1 x2 x3.(ne_geo_beach(x2) & (x2 = x3) & ne_geo_laguna(x3) & in(x1,x2) & n_surfer(x1))