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: It was time for Nita's annual performance review. Sentence2: She was very nervous! Sentence3: Her boss called her into his office. Sentence4: Then he told Nita her performance was great this year! Sentence5: He even gave Nita a small raise.
Nita, Boss

Sentence1: Cathy recently took a trip to the Bahamas. Sentence2: While in the Bahamas, Cathy decided to swim with dolphins. Sentence3: Cathy was scared that the dolphins would attack her. Sentence4: However, Cathy was surprised at how docile the dolphins were. Sentence5: Cathy was so glad she took the chance to swim with the dolphins.
Cathy, Dolphins

Sentence1: While walking down the street, Ramona found a wallet in the grass. Sentence2: She opened it and found the ID of a man named Jack. Sentence3: She searched the internet and messaged him about what she found. Sentence4: They ended up emailing a lot in the days before they could meet. Sentence5: When she returned the wallet, he asked her out and they fell in love!
Jack, Ramona