A group of children dance and play instruments under colored lights.
A group of children are gleefully playing instruments.
The children do not necessarily have to be playing gleefully.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x4) & under(e1,x7) & n_light(x7) & Theme(e2,x7) & v_color(e2) & Theme(e1,x6) & Actor(e1,x5) & v_play(e1) & n_instrument(x6) & (x4 = x5) & n_group(x4) & a_topic(x1) & of(x1,x2) & n_dance(x2) & of(x2,x3) & n_child(x3) & n_group(x1))
exists e1 s1 x1 x2 x3.(a_gleefully(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_instrument(x3) & of(x1,x2) & n_child(x2) & n_group(x1))