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.

[EX Q]: Sentence1: Riley had always enjoyed playing board games. Sentence2: One day he decides to play chess with a friend. Sentence3: It was a difficult game. Sentence4: In the end, Riley lost the chess game. Sentence5: However, he still loved board games.
[EX A]: A friend, Riley

[EX Q]: Sentence1: Joe was bit by a cat when he was very young. Sentence2: Since then, he has always been scared of cats. Sentence3: One day at school, a cat came up to him and played with him. Sentence4: Joe had a lot of fun with the cat. Sentence5: Now, Joe is not scared of cats.
[EX A]: Joe, Cat

[EX Q]: Sentence1: Larry is one of the best poker players ever. Sentence2: He is playing in a championship match tonight. Sentence3: He is almost about to win for the 5th time tonight. Sentence4: When the camera's catch him counting cards. Sentence5: Larry is arrested and banned from ever playing again.
[EX A]:
Larry