instruction:
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.
question:
Sentence1: I walked to my classroom. Sentence2: I was confused since no person waiting outside of the room. Sentence3: My friend eventually came. Sentence4: He told me that class was cancelled for today. Sentence5: I started to head home.
answer:
I (myself), Friend

question:
Sentence1: Alex had a young son. Sentence2: The boy was three years old. Sentence3: He still wasn't speaking. Sentence4: Alex told the doctor about his speech issue. Sentence5: Alex's son started to see a speech therapist.
answer:
Speech therapist, Alex, Young son, Doctor

question:
Sentence1: Tim wanted to live a life of success and living well. Sentence2: He began studying successful people. Sentence3: He discovered many patterns. Sentence4: He applied these newly discovered patterns to his own life. Sentence5: Tim eventually became very successful by applying those principles.
answer:
Tim, Successful people