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: 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.
[EX A]: Someone, Tom

[EX Q]: Sentence1: William moved into his first apartment one day. Sentence2: He did not have any furniture and needed to get some. Sentence3: He looked online and found a man giving away free furniture. Sentence4: He drove to the man's house and happily took the new items. Sentence5: When he got home, he furnished his house and it looked great.
[EX A]: William, A man

[EX Q]: Sentence1: Eric was in a bad mood. Sentence2: So he decided to go a buffet by himself. Sentence3: He initially felt better after eating tons of food. Sentence4: But later, his visions became blurry. Sentence5: And he felt so exhausted he couldn't do anything.
[EX A]:
Eric