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: It was test day. Sentence2: People were scrambling to study. Sentence3: They didn't know the material well enough. Sentence4: The teacher told them to put everything away. Sentence5: They all failed.
Output:
The teacher, People