a man paddles his canoe on the lake.
The man is walking on water.
One cannot paddling a canoe and walk on water at the same time.
exists e1 x1 x2 x3.(n_lake(x3) & Theme(e1,x2) & Actor(e1,x1) & v_paddle(e1) & on(x2,x3) & n_canoe(x2) & of(x2,x1) & n_male(x1) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & on(e1,x2) & n_water(x2) & Actor(e1,x1) & v_walk(e1))