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.

[Q]: Sentence1: Sam went on his weekly fishing trip with his dad. Sentence2: Usually Sam only catches small fish, but this time it was different. Sentence3: The fish almost pulled him off balance, but he caught it. Sentence4: The fish was longer than he was tall, and it was his biggest catch. Sentence5: Sam and his dad got a picture with the fish and cherished the memory.
[A]: Dad, The fish, Sam

[Q]: Sentence1: Quentin had always wanted to learn to play football. Sentence2: One day he decided to try out for the school team. Sentence3: He was luckily given a spot on the team. Sentence4: Quentin worked hard until he was a football expert. Sentence5: He was glad he had learned to play football.
[A]: Quentin, Team

[Q]: Sentence1: I went to my friend's house for piano lessons. Sentence2: I had a few pieces I was working on. Sentence3: I got feedback early on. Sentence4: I was never good enough to sight read hymns. Sentence5: But I knew I could learn any piece.
[A]:
I (myself), Friend