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: Dean decided he was going to prank his principle. Sentence2: He took a carton of eggs from his fridge and headed out. Sentence3: He arrived at his principal's house a little after midnight. Sentence4: After throwing two eggs his principle came outside. Sentence5: He was forced to clean up the mess and serve detention for a month.
answer:
Dean, Principal

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: Larry was a very forgetful person. Sentence2: He always forgot his anniversary and this year was no exception. Sentence3: His wife was there waiting with dinner cooked when he got home. Sentence4: She was very mad that he had forgot. Sentence5: Larry made it up to her by taking her out for a movie later.
answer:
Larry, His wife