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.

[EX Q]: Sentence1: Fred was going to make sure he didn't end up like his dad. Sentence2: His dad abused his mom and never provided for his family. Sentence3: Fred found a good job and got married. Sentence4: He supported his family and never abused them. Sentence5: Fred was proud of his own accomplishments.
[EX A]: His mom, His dad, His family, Fred

[EX Q]: Sentence1: An asteroid blazed across the sky. Sentence2: It fell to the ground with a soft shock. Sentence3: A man walked by and looked at it. Sentence4: The rock glowed with heat as he reached for it. Sentence5: The man felt the heat and back off until it was cool.
[EX A]: A man

[EX Q]: Sentence1: Chad had gone to an amusement park. Sentence2: He was riding on the roller coaster. Sentence3: Chad was wearing a baseball cap. Sentence4: The baseball cap fell off of Chad's head. Sentence5: Chad found the cap after he got off of the ride.
[EX A]:
Chad