Five men in suits.
They all know eachother.
Not all men that are in suits know eachother.
exists x1 x2.(a_topic(x1) & in(x1,x2) & n_suit(x2) & n_man(x1) & card_eq_5(x1))
exists x2.(n_thing(x2) & all x1.((x1 = x2) -> exists e1 x3.(Theme(e1,x3) & Actor(e1,x1) & v_know(e1) & n_eachother(x3))))