Brunette woman is signing while playing a piano.
The woman is yelling while playing an instrument.
The woman is either  signing or yelling while playing an instrument.
exists e1 e2 x1 x2 x3.(while(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_play(e2) & n_piano(x3) & Actor(e1,x1) & v_sign(e1) & n_woman(x1) & (x1 = x2) & ne_nam_brunette(x2))
exists e1 e2 x1 x2.(n_woman(x1) & while(e1,e2) & Theme(e2,x2) & Actor(e2,x1) & v_play(e2) & n_instrument(x2) & Actor(e1,x1) & v_yell(e1))