Definition: 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: Sentence1: Mike loved to ride horses, and was very good at it. Sentence2: However, Mike was short on money. Sentence3: Mike learned that many children in his neighborhood loved horses. Sentence4: Mike soon developed an idea to help kids and make money. Sentence5: Nowadays, Mike runs a horse riding school, and makes a lot of money.
Output:
Mike, Children