There are trees with no leaves in the background.
The trees are brown.
Not all trees are brown.
exists p1 x1 x4.(n_background(x4) & exists x2.(-exists x3.((x1 = x2) & with(x2,x3) & in(x3,x4) & n_leaf(x3)) & n_tree(x2)))
exists e1 x1.(n_tree(x1) & Theme(e1,x1) & v_brown(e1))