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.

Input: Consider Input: Sentence1: Tammy is a lawyer. Sentence2: She enjoys helping people and earning money. Sentence3: A poor client asks her to take her case. Sentence4: She says no. Sentence5: Tammy felt bad for her and helped her anyway.

Output: Poor client, Tammy

Input: Consider Input: Sentence1: I made spaghetti last night. Sentence2: I went to the fridge to get my Romano cheese, which I love! Sentence3: To my great disappointment, I had none. Sentence4: I thought grated cheddar might be a replacement. Sentence5: I tried that and it was horrible, so I ate a hamburger instead.

Output: I (myself)

Input: Consider Input: Sentence1: I tried to watch the college football championship game on Monday. Sentence2: I sat down in my easy chair. Sentence3: I watched about ten minutes. Sentence4: I fell asleep in the chair. Sentence5: I did not know Alabama won until I woke up in the morning.
Output: I (myself)