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: I was feeling really sick. Sentence2: We were lined up for the bathroom. Sentence3: I sat on the floor. Sentence4: The teacher told me to go to her. Sentence5: I walked up to her and vomited on her feet.

Output: I (myself), Teacher

Input: Consider Input: Sentence1: Barry loved making kites in his spare time. Sentence2: Barry decided to make kite making into a business. Sentence3: Barry was amazed by the number of orders he received. Sentence4: Barry ensured that each kite was made with love and care. Sentence5: Barry was glad he could turn his hobby into a passion.

Output: Barry

Input: Consider Input: Sentence1: Amy asked her mother for a box of Cookie Crisp. Sentence2: She was surprised when she wasn't allowed. Sentence3: Amy didn't understand why she couldn't have cereal anymore. Sentence4: Apparently cereal had too much sugar. Sentence5: Amy was sad she had to stop eating cereal.
Output: Amy, Mother