Q: 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.
Sentence1: Tom was in a wrestling tournament. Sentence2: He went up against a guy much bigger than him. Sentence3: Tom didn't think he was the same weight class. Sentence4: The guy was nothing but muscle and beat Tom easily. Sentence5: Tom decided to gain more muscle after.
A:
Guy, Tom