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: John was at home thinking about what to eat for dinner. Sentence2: He went to the fridge and looked inside. Sentence3: He saw that he had some fish. Sentence4: John cooked the fish in a frying pan. Sentence5: He ate the fish for dinner.

Output: John

Input: Consider Input: Sentence1: When the little boy went home, he couldn't find his mother or father. Sentence2: He looked all around. Sentence3: He called their names but no one answered. Sentence4: Eventually a neighbor heard him. Sentence5: She said his parents were at her home.

Output: Mother, Father, Neighbor, The little boy

Input: Consider Input: Sentence1: Monica was trying to take out her trash. Sentence2: She went to grab one big trash bag when a spider crawled over. Sentence3: She shrieked and dropped the bag, rushing for bug spray. Sentence4: Luckily she had a clear shot to spray the spider. Sentence5: After it was gone, she continued on with her trash.
Output: Monica, Spider