Girl in purple shirt is playing a musical instrument with other musicians.
She is playing by herself.
she is either with other musicians or by herself
exists e1 s1 s2 x1 x2 x3 x4 x5.(n_musician(x5) & ne_nam_girl(x1) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & with(x3,x4) & -(x4 = x5) & n_musician(x4) & n_instrument(x3) & a_musical(s2) & Theme(s2,x3) & in(x1,x2) & n_shirt(x2) & a_purple(s1) & Theme(s1,x2))
exists e1 x1.(n_female(x1) & n_female(x1) & by(e1,x1) & Actor(e1,x1) & v_play(e1))