Two professional businessmen having a conversation.
Two business men stand near each other not talking.
One can't be not talking and having a conversation.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_conversation(x2) & n_businessman(x1) & a_professional(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1 x2.(all x3.(n_other(x3) -> (-exists e2.(for(e1,e2) & Actor(e2,x1) & v_talk(e2)) & near(e1,x3))) & Actor(e1,x1) & v_stand(e1) & n_man(x1) & of(x1,x2) & n_business(x2) & card_eq_2(x1))