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: Simy heard her mom speaking to her grandma about a lost letter. Sentence2: She asked her mom what happened. Sentence3: Her mom said her grandma had lost a special letter from her grandpa. Sentence4: Simy felt sad but soon forgot as she played. Sentence5: While putting her toys away she found the letter on a toy shelf.
[EX A]: Simy, Grandpa, Mom, Grandma

[EX Q]: Sentence1: Nancy had been unhappy in her marriage for many Year's. Sentence2: She knew it was time for a change, but she was afraid of being alone. Sentence3: Finally Nancy decided to divorce her husband. Sentence4: It was hard on both of them, but in the end it was the right thing. Sentence5: Now alone, Nancy is happy that she is no longer with her ex husband.
[EX A]: Nancy, Nancy's husband

[EX Q]: Sentence1: Ken was driving home. Sentence2: He reached for his drink. Sentence3: It wasn't there. Sentence4: He then pulled over. Sentence5: Ken had forgotten it on the roof of the car.
[EX A]:
Ken