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: The children gathered at recess. Sentence2: They were trying to decide what to play. Sentence3: Marie suggested they play tag. Sentence4: Marie chose Johnny to be it and at once the game started. Sentence5: The children ran away from Johnny as he began chasing them.
A:
Marie, Children, Johnny