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: Roland came to the bowling alley looking to improve his skills. Sentence2: He paid for 2 hours of bowling as well as premium equipment. Sentence3: Roland hadn't been playing for long when he got his first ever strike. Sentence4: Feeling accomplished, he did his signature dance and ordered food. Sentence5: He managed to do it 3 more times before it was done for the evening.

Ex Output:
Roland

Ex Input:
Sentence1: It was time to play games with my friends. Sentence2: We had four balls to play with. Sentence3: The best was the blue ball. Sentence4: Unfortunately, my friend Tim wanted to play with it. Sentence5: We both decided to compromise and share the blue ball.

Ex Output:
I (myself), Tim, My friends

Ex Input:
Sentence1: When tom went to his friends, he loved the food. Sentence2: He needed the recipe for the sauce. Sentence3: So he went home and made it himself. Sentence4: When he did though, it tasted bad. Sentence5: Tom didn't know what he did wrong.

Ex Output:
Tom