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: Bryan is in the third grade. Sentence2: He does not listen to his parents. Sentence3: Since he always refuses to do his homework he is behind in school. Sentence4: He know has to go to a tudor every night. Sentence5: Bryan has now learned how to his math. 3.
Output:
Bryan, Parents, Tudor