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 looking forward to Halloween. Sentence2: He was thinking of a good costume. Sentence3: He wanted something fun and yet a little bit scary. Sentence4: Tom decided to go as a clown. Sentence5: He received many compliments on his great costume.
Clown, Tom