A gray bird is flying through the trees.
A bird landing on a branch.
Flying through the trees does not mean landing on a branch.
exists e1 s1 x1 x2.(n_tree(x2) & through(e1,x2) & Actor(e1,x1) & v_fly(e1) & n_bird(x1) & a_gray(s1) & Theme(s1,x1))
exists x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_branch(x3) & n_landing(x1) & of(x1,x2) & n_bird(x2))