Two children run and play in the grass.
The boys are helping the old lady across the street.
The children cannot be helping if they run and play
exists e2 e1 x1 x2 x3.(n_grass(x3) & in(e2,x3) & Actor(e2,x2) & v_play(e2) & n_child(x2) & card_eq_2(x2) & Actor(e1,x1) & v_run(e1) & n_child(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3.(n_street(x3) & n_lady(x2) & a_old(s1) & Theme(s1,x2) & n_boy(x1) & across(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_help(e1))