Instructions: 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: Sandy liked to push around other girls during school. Sentence2: She pushed the wrong person one day. Sentence3: Sandra was a much bigger girl and took no prisoners. Sentence4: Sandy cowered in fear because no one ever stood up to her. Sentence5: Sandra was the winner of the one sided fight.
Output:
Wrong person, Sandy, Sandra