Mindtrap question??

old mr. terminus was lying on his deathbed while his wife was about to give birth. father clement was at his bedside when mr. terminus dictated his will. "i leave 2/3 of my estate to my child, should it be a boy, and 1/3 to my wife. if the child is a girl, i was 2/3 to go to my wife and 1/3 to my daughter." mr. terminus pes on and left father clement with a rather peculiar problem, since mrs. terminus gave birth to twins, a boy and a girl. how should the estate be divided in order to comply as closley as possible with his wishes?