A three-piece band is playing a concert.
The band will perform a song.
The band could potentially play more than a song during the concert.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_concert(x2) & n_band(x1) & a_three-piece(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_band(x1) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_song(x2))