A child is hanging upside down on a ladder while another child is swinging from a rope.
Children hanging and swinging on ropes
One child is hanging and one is swinging, which means we can refer to "children".
exists e1 p1 p2 x1.(exists e2 x3 x4.(from(e2,x4) & n_rope(x4) & Actor(e2,x3) & v_swing(e2) & n_child(x3) & -(x3 = x1)) & n_child(x1) & n_child(x1) & while(e1,p2) & exists s1 x2.(r_upside(s1) & on(s1,x2) & n_ladder(x2) & Theme(s1,x1) & a_down(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_hang(e1))
exists e1 s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(e1,s1) & on(e1,x4) & n_rope(x4) & Actor(e1,x3) & v_swing(e1) & n_thing(x3) & subset_of(x1,s1) & n_hanging(x1) & (x1 = x2) & ne_nam_children(x2))