A group of people gather on a balcony.
There are people.
There are people is less descript way of saying group of people.
exists e1 x1 x2 x3.(on(e1,x3) & n_balcony(x3) & Actor(e1,x1) & v_gather(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists p1 x1 x2.((x1 = x2) & n_people(x2))