Originally posted by: kupalmaru
Originally posted by: jing
Originally posted by: Dreiko
Since dead people/things can be summoned why can't sealed things be summoned (eg. kyubi)
You just answered your own question, because it is sealed.
The Fourth Hokage is sealed inside the stomack of the Death God. During the battle between The Third and Oro, Oro summoned three coffin. The first coffin got summon perfectly and the third coffin was prevented by the The Third.

People said that the person on the third coffin is supposed to be The Fourth Hokage. Can you summon a sealed person or the person on the third coffin is not The Forth?
They never said the fourth was sealed.