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: Scott pushed a girl from behind. Sentence2: The girl fell down to the ground. Sentence3: She reported Scott to the school principal. Sentence4: Scott was given counseling for his behavior. Sentence5: Scott apologized to the girl.
Output:
School, A girl, Scott, Principal