Black dog climbs over fallen logs or boards.
The black dog is climbing over something in its path.
Fallen logs are something in its path for the dog to climb over.
exists s1 s2 x1 x2 x3.(a_topic(x1) & over(x1,x3) & (n_log(x3) | n_board(x3)) & a_fallen(s2) & Theme(s2,x3) & n_climb(x1) & of(x1,x2) & n_dog(x2) & a_black(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_path(x3) & of(x3,x1) & n_thing(x1) & n_dog(x1) & a_black(s1) & Theme(s1,x1) & in(e1,x3) & over(e1,x2) & n_thing(x2) & Actor(e1,x1) & v_climb(e1))