Friends enjoying drinks and hugging at a party.
There is no-one in the room.
There are friends in the party.
exists e2 e1 x1 x2 x3 x4.(at(e2,x4) & n_party(x4) & Actor(e2,x3) & v_hug(e2) & n_friend(x3) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_drink(x2) & n_friend(x1))
exists p1 x1 x3.(n_room(x3) & exists x2.((x1 = x2) & in(x2,x3) & n_no-one(x2)))