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: John was really hungry. Sentence2: He noticed a hot dog eating contest. Sentence3: He figured it was a way to get free food. Sentence4: John entered and actually won. Sentence5: He was happy for the food and the prize.
A:
John