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: My sister is afraid of spiders. Sentence2: She jumps and screams every time she sees one. Sentence3: I love teasing her with spiders and watching her run away. Sentence4: At school, my sister learned about spiders and was no longer afraid. Sentence5: Now I can't have fun teasing her about spiders.
Example Output: I (myself), My sister, Spider, Spiders

Example Input: Sentence1: I was having trouble finding my comfortable slippers. Sentence2: I looked everywhere for them. Sentence3: I found them on my wife's feet. Sentence4: She told me she found them in the living room. Sentence5: Finders keepers, she told me.
Example Output: I (myself), My wife

Example Input: Sentence1: Jrue dealt with leg injuries throughout his career. Sentence2: He was finally healthy entering last offseason. Sentence3: He did a lot of leg strengthening exercises. Sentence4: He had a minutes limitation at the start of this season. Sentence5: He now plays heavy minutes without any issues with his legs.
Example Output:
Jrue