Man surfing a wave and pulling off a trick.
The man is standing upright.
Not all man surfing a wave and pulling off a trick is standing upright.
exists e1 e2 s1 x1 x2 x3 x4.(a_off(s1) & Manner(e2,s1) & Theme(e2,x4) & Actor(e2,x3) & v_pull(e2) & n_trick(x4) & n_man(x3) & Theme(e1,x2) & Actor(e1,x1) & v_surf(e1) & n_wave(x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Time(e1,x2) & n_upright(x2) & Actor(e1,x1) & v_stand(e1))