A group of women dressed in black playing musical instruments in front of a large building.
A group of women are performing a free concert.
Not all groups of women dressed in black playing musical instruments in front of a large building are performing a free concert.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & of(x1,x2) & in(e1,x7) & of(x7,x8) & n_building(x8) & a_large(s2) & Theme(s2,x8) & n_front(x7) & in(e1,x4) & n_instrument(x4) & of(x4,x6) & n_musical(x6) & of(x4,x5) & n_playing(x5) & a_black(s1) & Theme(s1,x4) & Theme(e1,x3) & v_dress(e1) & (x2 = x3) & n_woman(x2) & n_group(x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_perform(e1) & n_concert(x3) & a_free(s1) & Theme(s1,x3) & of(x1,x2) & n_woman(x2) & n_group(x1))