A group of people demonstrating.
A group of people are sleeping.
They cannot be demonstrating and sleeping simultaneously.
exists e1 x1 x2 x3.(a_topic(x1) & of(x1,x2) & Actor(e1,x3) & v_demonstrate(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_sleep(e1) & of(x1,x2) & n_people(x2) & n_group(x1))