Three men sit around a table.
People are having a meeting.
Not all three men sitting around a table are having a meeting.
exists e1 x1 x2.(around(e1,x2) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_3(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_meeting(x2) & n_people(x1))