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: A man found a five-and-a-quarter-inch floppy diskette. Sentence2: He was consumed with curiosity about its contents. Sentence3: He went online, and bought a drive that could read it. Sentence4: When the drive came, though, he found that he couldn't plug it in. Sentence5: His computer's motherboard didn't even have the right kind of socket.
Output:
Man