A woman is playing the piano and singing in front of a crowd.
A woman is playing piano.
People can be playing and singing at the same time.
exists e1 e2 x1 x2 x3 x4 x5.(n_piano(x2) & in(e2,x4) & of(x4,x5) & n_crowd(x5) & n_front(x4) & Actor(e2,x3) & v_sing(e2) & n_woman(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_woman(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_piano(x2) & n_woman(x1))