Instructions: 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.
Input: Sentence1: Tom loved heavy metal. Sentence2: He would listen to it all the time. Sentence3: He would play it as loud as he could through his headphones. Sentence4: Tom's ears eventually became damaged because of it. Sentence5: He was partially deaf as an adult.
Output:
Headphones, Adult, Tom