A group of people look on as a man points to a whiteboard.
A group of people look on as a man sleeps.
The man cannot point to a whiteboard and sleep at the same time.
exists e2 e1 x1 x2 x3 x4 x5.(r_on(e1) & as(e1,x3) & to(e2,x5) & n_whiteboard(x5) & Actor(e2,x4) & v_point(e2) & (x3 = x4) & n_man(x3) & Actor(e1,x1) & v_look(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e2 e1 x1 x2 x3 x4.(r_on(e1) & as(e1,x3) & Actor(e2,x4) & v_sleep(e2) & (x3 = x4) & n_man(x3) & Actor(e1,x1) & v_look(e1) & of(x1,x2) & n_people(x2) & n_group(x1))