A boy is jumping from a body board into the ocean.
A boy is skiing on a mountain.
A ocean is a direct contradiction to a mountain, being one is a large body of water and the other is large mass of land.
exists e1 x1 x2 x3 x4.(n_ocean(x4) & into(e1,x4) & from(e1,x2) & n_board(x2) & of(x2,x3) & n_body(x3) & Actor(e1,x1) & v_jump(e1) & n_boy(x1))
exists e1 x1 x2.(on(e1,x2) & n_mountain(x2) & Actor(e1,x1) & v_ski(e1) & n_boy(x1))