A couple having a conversation over drinks.
There are people who are patrons of the bar.
If people are having a conversation over drinks then there are patrons of the bar
exists e1 x1 x2 x3 x4.(a_topic(x1) & over(e1,x4) & n_drink(x4) & Theme(e1,x3) & Actor(e1,x2) & v_have(e1) & n_conversation(x3) & (x1 = x2) & n_couple(x1))
exists p1 x1 x5.(n_bar(x5) & exists p2 x2 x3.((x1 = x2) & exists x4.((x3 = x4) & of(x4,x5) & n_patron(x4)) & (x2 = x3) & n_people(x2)))