Detailed 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.
Q: Sentence1: Bill played music everyday! Sentence2: His neighbors complained about the music. Sentence3: Bill felt terrible about the noise. Sentence4: Bill bought some headphones. Sentence5: No one ever complained about the music again!
A:
Neighbors, Bill