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.

[Q]: Sentence1: John went to the horse races last weekend. Sentence2: He decided to bet on them. Sentence3: He started winning and bet even more. Sentence4: Eventually he lost everything he had won. Sentence5: He considered it breaking even and went home.
[A]: John

[Q]: Sentence1: Leroy was a poor old man. Sentence2: He lived most of his life on the streets. Sentence3: He stumbled into a gas station. Sentence4: He wanted something to eat but found a lottery ticket. Sentence5: The ticket Leroy found was the winning ticket.
[A]: Leroy

[Q]: Sentence1: Andy loved learning about things. Sentence2: He went to a new museum to learn about history. Sentence3: He looked at each exhibit. Sentence4: At the end of it, he was impressed. Sentence5: The museum had done a wonderful job teaching him about history.
[A]:
Andy