Four boys in red are playing with fallen leaves.
The four boys are throwing snowballs at each other.
fallen leaves and snowballs are different things.
exists e1 s1 x1 x2 x3.(with(e1,x3) & n_leaf(x3) & a_fallen(s1) & Theme(s1,x3) & Actor(e1,x1) & v_play(e1) & in(x1,x2) & n_red(x2) & n_boy(x1) & card_eq_4(x1))
exists e1 x1 x2.(n_boy(x1) & card_eq_4(x1) & all x3.(n_other(x3) -> at(e1,x3)) & Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_snowball(x2))