Two men sitting and talking to each other.
Two people are chatting.
Although they are talking, it does not imply they are chatting.
exists e1 e2 x1 x2 x3.(a_topic(x1) & all x4.(n_other(x4) -> to(e2,x4)) & Actor(e2,x3) & v_talk(e2) & (x1 = x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1.(Actor(e1,x1) & v_chat(e1) & n_people(x1) & card_eq_2(x1))