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: Jan wanted a new purse. Sentence2: She knew should could not afford the one she wanted. Sentence3: She decided to start saving until she could. Sentence4: Jan finally had enough money. Sentence5: When she went to buy the purse, it was gone.

Ex Output:
Jan

Ex Input:
Sentence1: Tom was in the shower. Sentence2: He heard someone knocking at the door. Sentence3: He rushed to the door. Sentence4: He only had a small towel. Sentence5: He was embarrassed but answered the door.

Ex Output:
Someone, Tom

Ex Input:
Sentence1: It was raining when i'm going to school. Sentence2: I left my umbrella on the rack outside the door. Sentence3: After class i noticed one guy took my umbrella. Sentence4: I shout at him why did he get my umbrella but he ignored me. Sentence5: When i look at rack my umbrella is there and i feel so ashamed.

Ex Output:
I (myself), Guy