Definition: 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: Sentence1: John was on a walk through town, when a man came running behind him. Sentence2: The man snatched a handbag from a woman walking next to John. Sentence3: John chased down the thief, and eventually apprehended him. Sentence4: John reported the thief to the police and returned the handbag. Sentence5: The woman was very grateful, and they became friends.
Output:
The thief, Woman, John, Police, Man