A band of musicians performing for a rally.
A four piece band is playing for a live audience.
WE DON'T KNOW THAT THE BAND CONSISTS OF FOUR PIECES.
exists e1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & for(e1,x4) & n_rally(x4) & Actor(e1,x3) & v_perform(e1) & (x2 = x3) & n_musician(x2) & n_band(x1))
exists e1 s1 x1 x2 x3.(for(e1,x3) & n_audience(x3) & a_live(s1) & Theme(s1,x3) & Actor(e1,x1) & v_play(e1) & Time(x1,x2) & n_band(x2) & n_piece(x1) & card_eq_4(x1))