A surfer is riding a wave.
A woman is riding the waves to the shore.
A surfer does not have to be a woman.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_wave(x2) & n_surfer(x1))
exists e1 x1 x2 x3.(n_shore(x3) & n_wave(x2) & to(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_woman(x1))