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: Sam was at a party. Sentence2: He decided to change the music playing. Sentence3: Nobody wanted to listen to what he wanted. Sentence4: The host of the party asked him to stop playing his music. Sentence5: Sam agreed but felt annoyed.
A:
Party host, Host of the party, Sam