Dog races through grass by lone tree.
An animal is running outdoors.
A dog is an animal, and lone tree implies outdoors.
exists s1 x1 x2 x3 x4.(a_topic(x1) & through(x1,x3) & by(x3,x4) & n_tree(x4) & a_lone(s1) & Theme(s1,x4) & n_grass(x3) & n_race(x1) & (x1 = x2) & ne_nam_dog(x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_outdoors(x2) & n_animal(x1))