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: One night Chris was having trouble sleeping. Sentence2: His neighbors were blasting music above him. Sentence3: So he went upstairs to knock on their door and tell them off. Sentence4: They couldn't hear him so he went back downstairs. Sentence5: He fell asleep, so tired now even with the bass.
A:
Chris, His neighbors