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: Consider Input: Sentence1: Maddie really wanted a puppy. Sentence2: Her mom told her if she gets all good grades, she could get one. Sentence3: She worked really hard for three months on her school work. Sentence4: When report cards came out, she had earned all a's and b's! Sentence5: Maddie's mom took her to get her puppy as her reward.

Output: Maddie, A puppy, Her mom

Input: Consider Input: Sentence1: Ina and her boyfriend Tio had been dating for eight years. Sentence2: Lately things had been rough, so when he asked her out, she sighed. Sentence3: She was sure they were going to break up that evening. Sentence4: But instead, Tio said he wanted to make things work with Ina! Sentence5: He said he had already scheduled, and paid for, couples counseling!

Output: Tio, Ina

Input: Consider Input: Sentence1: On the reading exam, Timmy purposely slept during the entire test. Sentence2: The next day, he was pulled out of his class to go to another class. Sentence3: The instructor announced that this is a reading session. Sentence4: Timmy became mad when he founded out that this class lasts all year. Sentence5: He slammed the door on the way out.
Output: The instructor, Timmy