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.
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Question: Sentence1: Lou's dad went fishing with his friends one Saturday a month. Sentence2: Lou always asked to go along but his dad said he was too little. Sentence3: Then one day, Lou's dad said he could go! Sentence4: He and his dad went out on a boat with fishing poles. Sentence5: He was very excited when he caught his first fish that day.

Answer: His dad, Friends, Lou

Question: Sentence1: My friend and I were bored yesterday. Sentence2: My friend suggested we play a video game. Sentence3: We decided to bet money on a video game. Sentence4: He beat me badly, but it was fun. Sentence5: I am upset I lost my money, but it was worth it.

Answer: I (myself), My friend

Question: Sentence1: I entered my Biochemistry class with confidence during the first day. Sentence2: Since I spent hours studying, I had no doubt that I would fail. Sentence3: However, I ended up failing my first two tests. Sentence4: Although there was no way of passing the class, I still tried. Sentence5: I ended up failing and took this experience as a learning one.

Answer:
I (myself)