A man throws a pitch during a baseball game.
A man throws a ball.
The man must have thrown a ball if he threw a pitch during a baseball game.
exists e1 x1 x2 x3 x4.(during(e1,x3) & n_game(x3) & of(x3,x4) & n_baseball(x4) & Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_pitch(x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_ball(x2) & n_man(x1))