A man sitting on a rock near trees.
A man runs down the street.
If the man is sitting, it's pretty obvious he can't run as well.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & near(x3,x4) & n_tree(x4) & n_rock(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_street(x2) & down(e1,x2) & Actor(e1,x1) & v_run(e1) & n_man(x1))