In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.
Q: Sentence1: Pete was fat. Sentence2: Pete decided that he didn't want to be fat anymore. Sentence3: He went to the gym four days out of every week. Sentence4: He worked very hard at the gym, lifting weights and running. Sentence5: After a year Pete was very thin.
A:
Pete