Three people sing into a microphone.
The three people are mute.
The three individuals cannot both sing and be mute.
exists e1 x1 x2.(into(e1,x2) & n_microphone(x2) & Actor(e1,x1) & v_sing(e1) & n_people(x1) & card_eq_3(x1))
exists s1 x1.(n_people(x1) & card_eq_3(x1) & Theme(s1,x1) & a_mute(s1))