Three guys talking in city square.
Three guys are talking about politics in city square.
The could have been talking about the weather instead of politics.
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x3) & n_square(x3) & of(x3,x4) & n_city(x4) & Actor(e1,x2) & v_talk(e1) & (x1 = x2) & n_guy(x1) & card_eq_3(x1))
exists e1 x1 x2 x3 x4.(about(e1,x2) & in(x2,x3) & n_square(x3) & of(x3,x4) & n_city(x4) & n_politics(x2) & Actor(e1,x1) & v_talk(e1) & n_guy(x1) & card_eq_3(x1))