Three men in white button-up shirts chat.
Three men talking.
Chat and talking mean the same thing.
exists e1 s1 x1 x2 x3.(Actor(e1,x1) & v_chat(e1) & in(x1,x2) & n_shirt(x2) & of(x2,x3) & n_button-up(x3) & a_white(s1) & Theme(s1,x2) & n_man(x1) & card_eq_3(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_talk(e1) & (x1 = x2) & n_man(x1) & card_eq_3(x1))