A man with no shirt is climbing a rock ledge.
A man is sleeping.
One cannot be climbing and sleeping at the same time.
exists x1.(-exists e1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_climb(e1) & n_ledge(x3) & of(x3,x4) & n_rock(x4) & with(x1,x2) & n_shirt(x2)) & n_man(x1))
exists e1 x1.(Actor(e1,x1) & v_sleep(e1) & n_man(x1))