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: Sal was a great listener and a great friend. Sentence2: While her friends studied for careers, Sal helped them handle stress. Sentence3: Then she considered her own career. Sentence4: It didn't take long for her to come up with a perfect choice. Sentence5: Sal became a therapist, and continued to help people every single day!
Example Output: People, Friends, Sal

Example Input: Sentence1: Anna was jogging with her phone in her pocket. Sentence2: Suddenly she heard a noise and looked down. Sentence3: Her phone had fallen out of her pocket! Sentence4: Scared, she bent down to pick it up. Sentence5: She was so relieved to see it wasn't cracked!
Example Output: Anna

Example Input: Sentence1: Jean had an important date tonight. Sentence2: She wanted to dress to impress. Sentence3: She went to the mall to look for a dress. Sentence4: She found a nice looking red dress on sale. Sentence5: She became more confident in herself with her new dress.
Example Output:
Jean