A group of kids are sword fighting.
Some kids are playing with swords.
A group of kids are some kids and sword fighting is same as playing with words
exists p1 x1 x2.(exists s1 x3.((x1 = x3) & n_fighting(x3) & a_sword(s1) & Theme(s1,x3)) & of(x1,x2) & n_kid(x2) & n_group(x1))
exists e1 x1 x2.(with(e1,x2) & n_sword(x2) & Actor(e1,x1) & v_play(e1) & n_kid(x1))