Detailed Instructions: 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 didn't know who to start on his fantasy football team. Sentence2: His first quarterback was always getting injured. Sentence3: His second quarterback may or may not start the next game. Sentence4: John picked up a third quarterback off waivers instead. Sentence5: John started the third quarterback and he had a great game!
Solution:
John, 2nd quarterback, Quarterback, 3rd quarterback