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: Muriel and her sister always took the shortcut home. Sentence2: One day they decided to take the long way home. Sentence3: A strange man followed them and they got scared. Sentence4: They started running and screaming until they made it home. Sentence5: They told their parents and now they pick them up.
Output:
Strange man, Muriel's parents, Muriel's sister, Muriel