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.

Ex Input:
Sentence1: I was taking a long business trip one evening. Sentence2: I got terribly lost and my cell phone had died. Sentence3: It was dark and began to rain and I felt myself getting very anxious. Sentence4: I pulled into a gas station and asked for directions. Sentence5: In an hour I arrived safely at the hotel and fell asleep!

Ex Output:
I (myself)

Ex Input:
Sentence1: Pete worked as a handyman. Sentence2: He got a job doing repairs at an apartment complex. Sentence3: He learned he could get a rent discount if he moved into the complex. Sentence4: He worked there for many years and saved a lot of money. Sentence5: Because of his savings, Pete was eventually able to buy his own home.

Ex Output:
Pete

Ex Input:
Sentence1: Bonnie had a small vegetable garden in her backyard. Sentence2: One day Bonnie found several partially-eaten vegetables there. Sentence3: She quickly put up a fence to keep the critters out. Sentence4: She also put up a scarecrow to ward off the birds. Sentence5: Bonnie soon harvested many tasty vegetables from the garden.

Ex Output:
Bonnie