A baseball player swings his bat at an oncoming pitch.
The player has nothing in his hands.
If the player is swinging a bat, his hands would not be empty.
(x)
exists x1 x3.(n_hand(x3) & of(x3,x1) & n_male(x1) & n_player(x1) & -exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & in(x2,x3) & n_thing(x2)))