A man is skiing in water.
The man is holding on to a rope.
skiing in water can be done by holding an to a rope.
exists e1 x1 x2.(in(e1,x2) & n_water(x2) & Actor(e1,x1) & v_ski(e1) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & r_on(e1) & to(e1,x2) & n_rope(x2) & Actor(e1,x1) & v_hold(e1))