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: Rebecca wanted to be a bookstore owner. Sentence2: She took business classes at her local college. Sentence3: She got a job working for a bookstore. Sentence4: She learned how to operate a bookstore. Sentence5: Rebecca now runs her own bookstore.
Output:
Rebecca