A white bird flying over trees
A bird flies over trees.
A white bird is a white one which flies over trees.
exists e1 s1 x1 x2 x3.(a_topic(x1) & over(e1,x3) & n_tree(x3) & Actor(e1,x2) & v_fly(e1) & (x1 = x2) & n_bird(x1) & a_white(s1) & Theme(s1,x1))
exists e1 x1 x2.(over(e1,x2) & n_tree(x2) & Actor(e1,x1) & v_fly(e1) & n_bird(x1))