Two young men are having good time.
The two young men were related.
Men having a good time are not necessarily related.
exists e1 s1 s2 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_time(x2) & a_good(s2) & Theme(s2,x2) & n_man(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists s1 s2 x1.(n_man(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1) & Theme(s2,x1) & a_relate(s2))