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: Consider 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.

Output: Pete, Boss, People

Input: Consider Input: Sentence1: My wife went to a party. Sentence2: They were selling cleaning supplies there. Sentence3: She liked it so much that she bought some. Sentence4: We tried it on the Windows and loved it. Sentence5: We then bought some more since we enjoyed it.

Output: I (myself), Wife

Input: Consider Input: Sentence1: Beth decided to work out on a treadmill at the gym. Sentence2: She was out of shape, but confident she could perform well. Sentence3: She started the treadmill on a medium setting. Sentence4: Beth was running fast trying to keep up. Sentence5: When she reached to turn it down she fell and slid off the treadmill.
Output: Beth