The word 'extension' means to be given more time, to be allowed to have the chance of a postponed time limit or closing time. This means that a person is being given extra time to make final completion of any work.
In a similar case, Evangelina has asked for an extension to finish the project she's been given. With the word "not finished", we can know that the extension is related to the unfinished project.
Thus, the words "not finished" give us a clue about what the word extension means.
When the pigs start to sleep outside or start working for food and some get less then others while others get to live in the house while other animals live in the barn.
