A family sitting watching the tv.
A group of people in a room.
A family sitting watching tv is more broadly speaking also a group of people in a room.
exists e2 e1 x1 x2 x3.(n_tv(x3) & a_topic(x1) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x2) & v_watch(e2) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_family(x1))
exists x1 x2 x3.(a_topic(x1) & of(x1,x2) & in(x2,x3) & n_room(x3) & n_people(x2) & n_group(x1))