Three people sitting in a room together.
There are three friends sitting.
People sitting does not imply being friends.
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & r_together(x3) & n_room(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & card_eq_3(x1))
exists p1 x1 e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_friend(x2) & card_eq_3(x2))