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: Sue entered a nacho eating contest. Sentence2: Nachos are her favorite food so she thought she could do well. Sentence3: Sue started off slow to pace herself. Sentence4: She then upped the ante. Sentence5: Sue ate 15 pounds of nachos but did not win.

Output: Sue

Input: Consider Input: Sentence1: Jennifer went out that morning to walk the dog. Sentence2: He was a very excitable labrador retriever. Sentence3: Jennifer did not see the bunny until it was too late. Sentence4: Fido bounded after it, while she raced to keep up. Sentence5: She was finally able to slow him down, and make him stop chasing it.

Output: Bunny, Jennifer

Input: Consider Input: Sentence1: I bought a wheel of camembert. Sentence2: I then picked up a box of specialty crackers. Sentence3: After finding some olives stuffed with garlic, I was ready. Sentence4: I took them all home and ate them as appetizers. Sentence5: I thoroughly enjoyed the appetizers I made.
Output: I (myself)