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 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: 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.

SOLUTION: Nita, Boss

PROBLEM: Sentence1: Natalie was autistic like my son. Sentence2: She was very tiny for her age. Sentence3: She always wanted to see Caleb. Sentence4: I talked with my husband last night. Sentence5: We decided to surprise him with a trip to see Natalie before Christmas.

SOLUTION:
I (myself), Natalie, My husband