a man paddles his canoe on the lake.
The man is on the lake.
paddles his canoe on the lake shows that  man is on the lake.
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 p1 x1 x2.(n_lake(x2) & n_man(x1) & on(x1,x2))