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.
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Question: Sentence1: Tom was in the shower. Sentence2: He heard someone knocking at the door. Sentence3: He rushed to the door. Sentence4: He only had a small towel. Sentence5: He was embarrassed but answered the door.

Answer: Someone, Tom

Question: Sentence1: Kelli was injured on the job and couldn't work for a while. Sentence2: Because her bills continued to come in, she needed extra money. Sentence3: She joined a work-at-home site online to make some extra cash. Sentence4: Kelli really liked working on the site, and did a lot of hits. Sentence5: One morning she woke up to her first rejection and she felt crushed.

Answer: Kelli

Question: Sentence1: There once was a fast little rat inside of a house. Sentence2: The rat annoyed the family, as it chewed up wires in the home. Sentence3: The family soon decided to get a large cat. Sentence4: The cat soon found the rat hiding in his spot. Sentence5: Now, the rat who was once fast, is no longer allowed to roam.

Answer:
Rat, Family, Cat