Mountains with trees loom high in the background.
The trees are tall.
Not all trees are tall
exists e1 p1 x1 x2 x3.(n_background(x3) & in(e1,x3) & exists s1.(Theme(s1,x1) & a_high(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_loom(e1) & with(x1,x2) & n_tree(x2) & n_mountain(x1))
exists s1 x1.(n_tree(x1) & Theme(s1,x1) & a_tall(s1))