Two women and two men are sitting around a square table eating.
Two couples eating.
One cannot assume that the people are couples.
exists e1 x1 x2 x3 x4 x5 x6.(around(e1,x4) & n_eating(x4) & of(x4,x6) & n_table(x6) & of(x4,x5) & n_square(x5) & Actor(e1,x1) & v_sit(e1) & n_man(x3) & card_eq_2(x3) & n_woman(x2) & subset_of(x3,x1) & subset_of(x2,x1) & card_eq_2(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_eat(e1) & (x1 = x2) & n_couple(x1) & card_eq_2(x1))