A man is speaking into a microphone.
A woman sings into a microphone.
A man is not the same as woman.
exists e1 x1 x2.(into(e1,x2) & n_microphone(x2) & Actor(e1,x1) & v_speak(e1) & n_man(x1))
exists e1 x1 x2.(into(e1,x2) & n_microphone(x2) & Actor(e1,x1) & v_sing(e1) & n_woman(x1))