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: Zack was always worried about getting sick. Sentence2: And he became so worried about the air that he wore a respirator. Sentence3: He wore it during his entire school day. Sentence4: And he told other students that the air quality was terrible. Sentence5: Zack still ended up getting sick and worried much more.
[EX A]: Other students, Zack

[EX Q]: Sentence1: A family settled on a hotel. Sentence2: They got there the next day. Sentence3: Their bags were picked up for them. Sentence4: The lobby was their first view. Sentence5: They thought it was amazing.
[EX A]: A family

[EX Q]: Sentence1: Niles was terrified of going home. Sentence2: Report cards had been received and he had failed! Sentence3: When he got home, his parents pounced. Sentence4: He was struck and berated. Sentence5: Niles vowed to do much better next semester!
[EX A]:
Niles, Parents