Two professional businessmen having a conversation.
Two men are talking about work.
Talking about work and having a conversation are not the same thing.
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.(about(e1,x2) & n_work(x2) & Actor(e1,x1) & v_talk(e1) & n_man(x1) & card_eq_2(x1))