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: William moved into his first apartment one day. Sentence2: He did not have any furniture and needed to get some. Sentence3: He looked online and found a man giving away free furniture. Sentence4: He drove to the man's house and happily took the new items. Sentence5: When he got home, he furnished his house and it looked great.

Output: William, A man

Input: Consider Input: Sentence1: Bob's bought a trailer that had a shingle roof. Sentence2: When it rained the roof would leak pretty badly. Sentence3: Bob checked his insurance policy to see if it was covered. Sentence4: The insurance replaced the shingle roof with a metal one. Sentence5: Bob's happy the rain doesn't leak into his house any more.

Output: Bob

Input: Consider Input: Sentence1: I went to play basketball with my friends the other day. Sentence2: We met at the gym in the afternoon to play. Sentence3: While we were playing I fell and hurt my ankle. Sentence4: It hurt so bad I had to stop playing for the day. Sentence5: Even though I hurt my ankle, I still had a lot of fun!
Output: I (myself), My friends