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.

Example Input: Sentence1: Ken is a DJ for a club. Sentence2: Last night he had a really annoying patron. Sentence3: They kept asking for different songs. Sentence4: Ken kept having to turn him down. Sentence5: Eventually he just ignored him completely.
Example Output: Ken, Annoying patron

Example Input: Sentence1: Pete the clown was such a happy clown. Sentence2: He loved to bring smiles to the people of the rodeo. Sentence3: One day his boss calls him into his office. Sentence4: He tells pete he has to let him go. Sentence5: Pete was a very depressed and sad clown now.
Example Output: Pete, Boss, People

Example Input: Sentence1: A local politician had recently died. Sentence2: The man giving a speech for him was very moving. Sentence3: He riled up the whole crowd in his eulogy. Sentence4: People were moved to tears for this corrupt old man. Sentence5: Before he stepped down from the podium he announced his candidacy.
Example Output:
Politician, Crowd, Man