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.
Q: Sentence1: Hunter was a math tutor at school. Sentence2: He helped many kids learn math. Sentence3: One day he could not figure out how to do a math problem. Sentence4: He had to ask a teacher for help. Sentence5: Hunter was embarrassed that he did not know the questions answer.
A:
Kids, Hunter, Teacher