A seated man fires a gun.
A man is sitting with a gun
If someone fires a gun, they must have the gun with them.
exists e1 e2 x1 x2.(Theme(e2,x2) & Actor(e2,x1) & v_fire(e2) & n_gun(x2) & n_man(x1) & Theme(e1,x1) & v_seat(e1))
exists e1 x1 x2.(with(e1,x2) & n_gun(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))