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: My wife went to a party. Sentence2: They were selling cleaning supplies there. Sentence3: She liked it so much that she bought some. Sentence4: We tried it on the Windows and loved it. Sentence5: We then bought some more since we enjoyed it.

Ex Output:
I (myself), Wife

Ex Input:
Sentence1: Jim taught English in a small school in China. Sentence2: He had a crush on the math teacher Mrs Wang. Sentence3: Mrs Wang had an abusive husband who beat her. Sentence4: One day, Jim beat up Mrs Wang's husband and told him to scram. Sentence5: Now Jim and Mrs Wang live together in the USA.

Ex Output:
Mrs wang's husband, Jim, Mrs wang

Ex Input:
Sentence1: Bob's laptop was way too slow. Sentence2: He replaced the mechanical drive with a solid state one. Sentence3: He put in the maximum amount of memory the machine could take. Sentence4: When Bob turned it back on he was floor by the speed. Sentence5: It was at least five times as fast as it had been before!

Ex Output:
Bob