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: A group of five friends met at the local park. Sentence2: One brought a basketball. Sentence3: They all decided to play basketball. Sentence4: Everyone laughed and had fun. Sentence5: It was a fun day everyone remembers.

Output: Five friends, Group, One

Input: Consider Input: Sentence1: Sue had to make brownies for her party. Sentence2: Halfway through baking she realized that she had no eggs. Sentence3: Sue walked to her neighbor's to borrow two. Sentence4: The neighbor greeted her at the door. Sentence5: He gave her two eggs and told her to not worry about repayment.

Output: Sue, Neighbor

Input: Consider Input: Sentence1: Bob was pitching a baseball. Sentence2: He threw the ball as hard as he could. Sentence3: The batter hit the ball in a strange way. Sentence4: The ball ended up coming right back at Bob. Sentence5: Bob got hit straight in the stomach and fell down.
Output: Bob, Batter