a man paddles his canoe on the lake.
The man is going swimming.
the man is not said to be swimming when he paddles his canoe in 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 e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_go(e1) & n_swimming(x2))