You will be given a definition of a task first, then some input of the task.
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.

Sentence1: Joe decided he wanted to start his own business doing something fun. Sentence2: He constructed a business plan to open a local gym. Sentence3: The business plan promised to provide Joe with a steady income. Sentence4: He was shocked to see 15% more membership sales than he anticipated. Sentence5: Joe's business became a success and gave him the money to live well.
Output:
Joe