A man jumps while on a snowboard.
The man is in the snow
Snowboards belong on snow.
exists e1 x1 x2.(on(e1,x2) & n_snowboard(x2) & r_while(e1) & Actor(e1,x1) & v_jump(e1) & n_man(x1))
exists p1 x1 x2.(n_snow(x2) & n_man(x1) & in(x1,x2))