A group of children running.
Some kids running.
Children are kids.
exists e1 x1 x2 x3.(a_topic(x1) & of(x1,x2) & Actor(e1,x3) & v_run(e1) & (x2 = x3) & n_child(x2) & n_group(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_kid(x1))