Two young kids are playing in the grass.
Two children are moving about.
Kids playing means they are moving about.
exists e1 s1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_kid(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 s1 x1.(a_about(s1) & Manner(e1,s1) & Actor(e1,x1) & v_move(e1) & n_child(x1) & card_eq_2(x1))