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: The county of Rochester needed a new park. Sentence2: The county council couldn't decide where to put it though! Sentence3: They couldn't afford the landscaping for one in the old empty lots. Sentence4: So they went to the city and asked for help. Sentence5: The city was glad to help, and soon Rochester had a new park.
[EX A]: County council, City, County of rochester

[EX Q]: Sentence1: Tom was at the beach. Sentence2: He found a bottle with a message in it. Sentence3: The message had a contact e-mail. Sentence4: Tom e-mailed it and actually got a response. Sentence5: It was a pretty fun experience for him.
[EX A]: Tom

[EX Q]: Sentence1: Jack is in first grade. Sentence2: He has worked hard all year to keep his grades up. Sentence3: His final report card was sent home today. Sentence4: He received all A's. Sentence5: As a reward his mother took him for ice cream.
[EX A]:
Jack's mother, Jack