A dog is running.
A dog is going by.
Going by is a positional description, while a dog running could be anywhere.
exists e1 x1.(Actor(e1,x1) & v_run(e1) & n_dog(x1))
exists e1 s1 x1.(a_by(s1) & Manner(e1,s1) & Actor(e1,x1) & v_go(e1) & n_dog(x1))