A man walks out of the waves with his surfboard.
The man is a surfer.
Not all men are a surfer.
exists e1 x1 x2 x3.(n_surfboard(x3) & of(x3,x2) & n_male(x2) & n_wave(x2) & r_out(e1) & of(e1,x2) & with(x2,x3) & Actor(e1,x1) & v_walk(e1) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_surfer(x2)))