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: Sally was sad that she had no one to spend Christmas with. Sentence2: She decided to spend her holidays make others happy. Sentence3: She went shopping and purchased a bunch of different toys. Sentence4: On Christmas day she went to the children's home. Sentence5: She gave out the presents to the kids and had the best Christmas ever.

Output: Kids, Sally, Children, Others

Input: Consider Input: Sentence1: Thomas went out with his friends on Halloween. Sentence2: They decided to look for ghosts. Sentence3: It was dark and spooky, and Thomas wasn't sure he wanted to go. Sentence4: They did not find a single ghost! Sentence5: Still, he was glad to have spent time with his friends.

Output: Thomas, Friends

Input: Consider Input: Sentence1: Tom was a street racer. Sentence2: And he won many races. Sentence3: He thought it would be a good idea to quit though. Sentence4: But he accepted a challenge for one last race. Sentence5: However, Tom was caught by the police and put in jail.
Output: Police, Tom