QUES:
Who is it in the following sentence?

The hammer hit the bullet, so it shot.

ANS:
the bullet


QUES:
Who is they in the following sentence?

Santa Claus and his elves distributed millions of presents worldwide to the children of the world, but they do not all believe in them being able to give presents worldwide in a night.

ANS:
the children of the world


QUES:
Who is they in the following sentence?

The Minecraft developers managed to win their case regarding copyright infringement against Bethesda Studios, but they will probably file another lawsuit again.

ANS:

Bethesda Studios