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.

[EX Q]: Sentence1: Kerry enjoyed playing games on her smartphone. Sentence2: She mostly played free games that made revenue through ads. Sentence3: One day her favorite game had a major update. Sentence4: The new version had many more ads which were more intrusive in nature. Sentence5: Kerry's interest the game waned.
[EX A]: Kerry

[EX Q]: Sentence1: The family arrives at the beach. Sentence2: Everyone puts on sunscreen. Sentence3: The son plays in the clear water. Sentence4: The daughter builds sand castles. Sentence5: The parents relax for the rest of the day.
[EX A]: The parents, The daughter, The family, The son

[EX Q]: Sentence1: Billy always wanted a cat. Sentence2: He asked his mother for a cat but she said that he wasn't responsible. Sentence3: Billy did his best to demonstrate that he was responsible enough. Sentence4: Billy's mother saw how responsible billy and allowed him to get a cat. Sentence5: They went to the shelter and picked out a lovely cat.
[EX A]:
Billy, Cat, Billy's mother