A man in a green shirt on a half pipe, doing a skateboard stunt.
A man is doing a skateboard stunt
A man doing a skateboard stunt is doing a skateboard stunt.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & Theme(e1,x6) & Actor(e1,x5) & v_do(e1) & n_stunt(x6) & of(x6,x7) & n_skateboard(x7) & (x1 = x5) & in(x1,x2) & on(x2,x3) & n_pipe(x3) & of(x3,x4) & n_half(x4) & n_shirt(x2) & a_green(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_stunt(x2) & of(x2,x3) & n_skateboard(x3) & n_man(x1))