People sitting around a bar conversing.
People are at a bar discussing politics.
The people may be talking about something other than politics.
exists e1 x1 x2 x3 x4.(a_topic(x1) & around(e1,x3) & n_conversing(x3) & of(x3,x4) & n_bar(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))
exists p1 x1.(exists e1 x2 x3 x4.(at(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_discuss(e1) & n_politics(x4) & (x2 = x3) & n_bar(x2)) & n_people(x1))