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 prepared for a job promotion many years ago. Sentence2: However I was passed over every time the position opened. Sentence3: I wanted to file a lawsuit but was scared I would lose. Sentence4: I filed the lawsuit anyway and some people made my life hard. Sentence5: I am glad I filed that lawsuit because I won life is good again.

Ex Output:
I (myself), Some people

Ex Input:
Sentence1: Fred carefully unhitched the rented trailer. Sentence2: As he went to strap on the chain he noticed a missing link! Sentence3: He ducked under the trailer to find the rest of the chain. Sentence4: Fred hadn't properly set the brake and it rolled backwards. Sentence5: He slowly starved to death and was eaten by wild animals.

Ex Output:
Fred

Ex Input:
Sentence1: Tom went to a Chinese Restaurant for dinner. Sentence2: He ordered chicken and rice. Sentence3: After his meal he opened up his fortune cookie. Sentence4: His fortune said the he would have good luck coming. Sentence5: On the way home, he found a $10 bill on the sidewalk.

Ex Output:
Tom