A surfer in a black wetsuit rides a wave.
A surfer rides a wave while a line of surfers wait behind him for their turn
A surfer riding a wave does not imply that a line of surfers are waiting behind him.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & n_wave(x3) & in(x1,x2) & n_wetsuit(x2) & a_black(s1) & Theme(s1,x2) & n_surfer(x1))
exists e1 e2 x1 x2 x3 x4 x5 x6.(behind(e2,x1) & n_male(x1) & for(e2,x6) & n_turn(x6) & of(x6,x1) & n_thing(x1) & Actor(e2,x1) & v_wait(e2) & while(e1,x4) & of(x4,x5) & n_surfer(x5) & n_line(x4) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_wave(x3) & (x1 = x2) & n_surfer(x1))