In this task, you're given four sentences of a story written in natural language in which one part is missing. Your job is to predict the position and missing part of the story and return in the following format: position, missing part. The missing part is a sentence that completes the story, and the position is the number of the missing sentence in the new story.

Sentence1: Many years ago, the United States was not a country. Sentence2: Instead, the people who lived there were part of England. Sentence3: There was a long war, but ultimately they prevailed. Sentence4: The war was called the American Revolution.
3, They decided they wanted to be their own country.