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: Katy loved to cook. Sentence2: She just finished dinner one night and decided to make a dessert. Sentence3: She picked out a recipe, but did not have all the ingredients. Sentence4: She made some substitutions that she thought would work. Sentence5: When she removed the dessert from the oven, it was not edible.

Output: Katy

Input: Consider Input: Sentence1: Eugene was excited to order the new computer on a chip. Sentence2: He watched as the timer on the website slowly counted down to zero. Sentence3: Eugene stared impatiently as it sat there, nothing changing. Sentence4: He found other people on forums who were having the same problem. Sentence5: Eugene seethed that he'd stayed awake for this.

Output: Other people, Eugene

Input: Consider Input: Sentence1: Kate wanted more than anything to write a novel. Sentence2: The problem was that she found it hard to find the time. Sentence3: She tried getting up earlier, but her mind was too foggy to write. Sentence4: She tried staying up later, but she fell asleep on the keyboard. Sentence5: Then she started writing at lunchtime, which worked like a charm.
Output: Kate