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: I sent my friend a thank you gift. Sentence2: A few weeks later, she posted a picture on facebook. Sentence3: It was a picture of a lasane in the pan I had sent her. Sentence4: It said Leah's Kickasserole on the side. Sentence5: She posted how much she loved the dish.
Example Output: I (myself), Leah, Friend

Example Input: Sentence1: Samantha was going out for the night. Sentence2: She needed to withdraw money. Sentence3: She went to the atm and inserted her card. Sentence4: The atm displayed an error message! Sentence5: Sam drove to the grocery store and was able to get cash back instead.
Example Output: Samantha

Example Input: Sentence1: Beth and Bobby were having a baby. Sentence2: They both loved junk food, so they wanted to give her a sweet name. Sentence3: Bobby said Caramel and Beth suggested Sugar. Sentence4: They wrote down names to pick randomly since they couldn't agree. Sentence5: The winning name was Candy - a perfect tasty name for their daughter!
Example Output:
Baby, Beth, Bobby