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: The man turned on the light. Sentence2: A mouse got startled. Sentence3: The mouse ran across the living room. Sentence4: The man got startled. Sentence5: The man hid in his room.

SOLUTION: The man, A mouse

PROBLEM: Sentence1: Yusuf was startled by a loud knocking at his door at a late hour. Sentence2: He wasn't expecting company, and grabbed his gun. Sentence3: A shivering woman greeted him when he opened the door. Sentence4: She had hit black ice and her car had slid off the road. Sentence5: Yusuf called a tow truck for her, and let her warm up in his house.

SOLUTION: Yusuf, Woman

PROBLEM: Sentence1: As soon as Jennifer woke up, she knew it would be a bad day. Sentence2: There was no coffee left for her when she went downstairs. Sentence3: She then missed the bus that would take her to work. Sentence4: Since she was late for work, her boss was mad at her. Sentence5: When the day ended, Jennifer hoped tomorrow would be better.

SOLUTION:
Her boss, Jennifer