Four children are having a pillow fight.
Four children are asleep.
The children are either having a pillow fight (they are awake) or they are asleep. They cannot be doing both at the same time.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_fight(x2) & of(x2,x3) & n_pillow(x3) & n_child(x1) & card_eq_4(x1))
exists s1 x1.(Theme(s1,x1) & a_asleep(s1) & n_child(x1) & card_eq_4(x1))