The surfer passes a fellow surfer while paddling into the surf.
Two surfers are hitting the waves.
If people are paddling into the surf you can say they are hitting the waves
exists e2 e1 s1 x1 x2 x3.(n_surf(x3) & n_surfer(x1) & while(e1,e2) & into(e2,x3) & Actor(e2,x1) & v_paddle(e2) & Theme(e1,x2) & Actor(e1,x1) & v_pass(e1) & n_surfer(x2) & a_fellow(s1) & Theme(s1,x2))
exists e1 x1 x2.(n_wave(x2) & Theme(e1,x2) & Actor(e1,x1) & v_hit(e1) & n_surfer(x1) & card_eq_2(x1))