A woman is playing the piano and singing in front of a crowd.
she is practicing her skills.
Playing and singing before a crowd does not mean she is practicing.
exists e2 e1 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.(n_skill(x2) & of(x2,x1) & n_female(x1) & n_female(x1) & Theme(e1,x2) & Actor(e1,x1) & v_practice(e1))