A man walking a gray poodle is walking past a billboard with a cow on it.
A man is chasing after a gray dalmatian.
The man is either walking a gray poodle or chasing after a gray dalmatian but not doing both.
exists e1 e2 s1 x1 x2 x3 x4 x5.(with(e2,x5) & on(x5,x1) & n_thing(x1) & n_cow(x5) & past(e2,x4) & n_billboard(x4) & Actor(e2,x1) & v_walk(e2) & Theme(e1,x3) & Actor(e1,x2) & v_walk(e1) & n_poodle(x3) & a_gray(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2.(after(e1,x2) & n_dalmatian(x2) & a_gray(s1) & Theme(s1,x2) & Actor(e1,x1) & v_chase(e1) & n_man(x1))