A group of performers performing an act.
A group of dogs doing a show.
A group of dogs doing a show doesn't imply to group of  performers performing an act.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_perform(e1) & n_act(x4) & (x1 = x3) & of(x1,x2) & n_performer(x2) & n_group(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & n_show(x4) & (x2 = x3) & n_dog(x2) & n_group(x1))