A group of people sitting around conference tables.
There is no table
People sitting around a conference table verses there being no table.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & around(e1,x4) & n_table(x4) & of(x4,x5) & n_conference(x5) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists p1 x1.-exists x2.((x1 = x2) & n_table(x2))