TASK 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.
PROBLEM: Sentence1: John and Amy were playing tag with some friends. Sentence2: John tagged Amy and she took off running. Sentence3: She ran fast, but not fast enough. Sentence4: Soon the others caught up to her. Sentence5: Now it was time for Amy to chase everyone!

SOLUTION: Amy, Everyone, John, Friends

PROBLEM: 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.

SOLUTION: John

PROBLEM: Sentence1: The Johnson family loved going to the beach. Sentence2: They were trying to decide where to go for vacation. Sentence3: The family decided that they had to go to a beach. Sentence4: They decided to go to Florida. Sentence5: The Johnson family loved Florida and want to go back.

SOLUTION:
Johnson family