Definition: 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: James wrote short stories for a living. Sentence2: The hardest part was making interesting characters. Sentence3: When he got stuck he used people he knew. Sentence4: James' roommate noticed that he had been used in a story. Sentence5: He shared this information and many others angrily realized the same.
Output:
James, Roommate, People, Others