You will be given a definition of a task first, then some input of the task.
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.

Sentence1: Everyone took their seats in the class. Sentence2: The teacher introduced himself to the class. Sentence3: He also reviewed the syllabus and handed us a quiz. Sentence4: No person managed to pass since the quiz was difficult. Sentence5: The class protested since the teacher counted the quiz as a grade.
Output:
Everyone, Teacher