A dog running on grass.
A dog runs.
" A dog runs " is a rephrasing of " A dog running "
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_grass(x3) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_dog(x1))
exists e1 x1.(Actor(e1,x1) & v_run(e1) & n_dog(x1))