Definition: 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: Roy inherited a grand piano. Sentence2: He moved it into his living room. Sentence3: Then he decided to teach himself to play it. Sentence4: He studied the music daily. Sentence5: Soon he was a very talented pianist!
Output:
Roy