Children climbing huge tree.
Children climbing a tree with a treehouse outside.
Just because some children are climbing a large tree does not mean that it has a treehouse.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_climb(e1) & n_tree(x3) & a_huge(s1) & Theme(s1,x3) & (x1 = x2) & n_child(x1))
exists e1 x1 x2 x3 x4.(ne_nam_children(x1) & with(e1,x3) & n_outside(x3) & of(x3,x4) & n_treehouse(x4) & Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_tree(x2))