A man is firing a handgun.
A man appears to be waving a handgun
Not all men firing a handgun is not waving a handgun.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_fire(e1) & n_handgun(x2) & n_man(x1))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_appear(e1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_wave(e2) & n_handgun(x2)) & n_man(x1))