People sleeping in a terminal.
People sleeping
One can assume the people sleeping are the people sleeping in a terminal.
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_terminal(x3) & Actor(e1,x2) & v_sleep(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_sleep(e1) & (x1 = x2) & n_people(x1))