A group of woman in red shirts are singing.
A group of women in red shorts are performing in the choir.
Woman singing does not imply the woman are performing in a choir.
exists e1 s1 x1 x2 x3.(Actor(e1,x1) & v_sing(e1) & of(x1,x2) & in(x2,x3) & n_shirt(x3) & a_red(s1) & Theme(s1,x3) & n_woman(x2) & n_group(x1))
exists e1 s1 x1 x2 x3 x4.(n_choir(x4) & in(e1,x4) & Actor(e1,x1) & v_perform(e1) & in(x1,x3) & n_shorts(x3) & a_red(s1) & Theme(s1,x3) & of(x1,x2) & n_woman(x2) & n_group(x1))