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.

Example Input: Sentence1: Jake lived at the beach all his life. Sentence2: Jake landed a job which required him to move to Denver. Sentence3: Jake landed in cold Colorado in the middle of January. Sentence4: He had never felt such cold weather and seen such snow. Sentence5: Jake decided he loved the cold and would never go back to the coast.
Example Output: Jake

Example Input: Sentence1: I'm a big fan of pixel art. Sentence2: I express my fandom by making bead art of sprites. Sentence3: I melt the beads together so they fuse forever. Sentence4: It is a time-consuming but fun process. Sentence5: Now my walls are covered in bead-based pixel art.
Example Output: I (myself)

Example Input: Sentence1: Tim was very picky when it came to food. Sentence2: He refused to try any new foods, he never even had cake! Sentence3: Tim was going to his friend Josh's birthday party soon. Sentence4: It was time for Tim to try cake, he got a piece on his plate. Sentence5: Tim took a bite and absolutely loved it!
Example Output:
Tim