Two boys playing in the shadows of the trees.
Two brothers are playing in a forest
Just because two boys are playing it doesn't mean they are brothers. They could be neighbors. You also can't assume that since they are playing in the shadows of trees that they are in a forest. They may just be at the neighborhood park.
exists e1 x1 x2 x3 x4.(n_tree(x4) & n_shadow(x3) & a_topic(x1) & in(e1,x3) & of(x3,x4) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_boy(x1) & card_eq_2(x1))
exists e1 x1 x2.(in(e1,x2) & n_forest(x2) & Actor(e1,x1) & v_play(e1) & n_brother(x1) & card_eq_2(x1))