Some guys are having a conversation.
Women talking.
The subject can only be either on guys, or women.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_conversation(x2) & n_guy(x1))
exists e1 x1.(Actor(e1,x1) & v_talk(e1) & n_woman(x1))