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 young girl was at the grocery store after work one night. Sentence2: She had made a list and wanted to hurry home. Sentence3: When she was looking at the list a man bumped into to her. Sentence4: She looked up and smiled. Sentence5: The man then asked her out to dinner.

Output: A man, A young girl

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: Today was street cleaning day. Sentence2: Any car parked across from our building would be towed. Sentence3: At 9 AM, three tow trucks drove up and started towing. Sentence4: A woman ran quickly across the street. Sentence5: She was lucky to avoid being towed.
Output: A woman