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: James found a robber in his house. Sentence2: He decided to get a gun for protection. Sentence3: He didn't know anything about guns, but he didn't care. Sentence4: That night, he heard a noise. Sentence5: He shot into the darkness and ended up hitting his cat.

Output: James, Robber, Cat

Input: Consider Input: Sentence1: Tom moved out to the coast. Sentence2: He experienced his first earthquake. Sentence3: It was a minor one. Sentence4: Tom freaked out. Sentence5: His friends made fun of him.

Output: Friends, Tom

Input: Consider Input: Sentence1: There once was a man named Larry Butterfrog. Sentence2: He went down to buy World of Warcraft. Sentence3: However, he lacked the money. Sentence4: So, he had to go to his mom, who was miffed. Sentence5: And she told him to get a job.
Output: Larry butterfrog, His mom