Detailed 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.
Q: Sentence1: Tina and her friends had skipped school one day. Sentence2: They were walking through town when a car pulled up. Sentence3: Inside there was a school officer. Sentence4: He made them get in the car and brought them to school. Sentence5: There, they got into huge trouble.
A:
School officer, Her friends, Tina