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: 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.
Example Output: Sue

Example Input: Sentence1: Gina had inherited a house from her parents. Sentence2: She wanted to sell the house. Sentence3: Gina took out the things that had sentimental value. Sentence4: She found a realtor to sell the house. Sentence5: Gina sold the house to a buyer.
Example Output: Realtor, Buyer, Gina, Parents

Example Input: Sentence1: Frida needed a relaxing day after a hard work week. Sentence2: She went to the local beach near her house. Sentence3: The sun was shining and the weather was great. Sentence4: Frida laid out on the beach for hours and read a book. Sentence5: She had a wonderful and relaxing day.
Example Output:
Frida