Two women and a man are singing into one microphone.
Three people are singing
Two women and a man is three people.
exists e1 x1 x2 x3 x4.(into(e1,x4) & n_microphone(x4) & card_eq_1(x4) & Actor(e1,x1) & v_sing(e1) & subset_of(x3,x1) & n_man(x3) & subset_of(x2,x1) & n_woman(x2) & card_eq_2(x2))
exists e1 x1.(Actor(e1,x1) & v_sing(e1) & n_people(x1) & card_eq_3(x1))