An old man with a white beard is walking down a city street.
An old man is sleeping on the street.
The man cannot be walking and sleeping at the same time.
exists e1 s1 s2 s3 x1 x2 x3 x4.(a_down(s3) & Manner(e1,s3) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & n_street(x3) & of(x3,x4) & n_city(x4) & with(x1,x2) & n_beard(x2) & a_white(s2) & Theme(s2,x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_street(x2) & on(e1,x2) & Actor(e1,x1) & v_sleep(e1) & n_man(x1) & a_old(s1) & Theme(s1,x1))