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: My trumpet teacher was amazing. Sentence2: He could play any rhythm you put in front of him. Sentence3: I asked him to teach me his secret. Sentence4: He told me that he thought up words to go with the rhythms. Sentence5: All of his examples were really funny!
Output:
I (myself), Trumpet teacher