Instructions: 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: Sue has an English test in the morning. Sentence2: She got sick and had to miss her test. Sentence3: She was upset because she had studied so much. Sentence4: Sue arranged a time with her teacher to make her test up. Sentence5: When she finally took her test, she passed it with flying colors.
Output:
Sue, Teacher