Q: 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.
Sentence1: Ben's alarm clock started beeping at 6 in the morning. Sentence2: He hit the snooze button. Sentence3: After 10 minutes it rang again. Sentence4: He tried to turn it off but accidentally hit snooze again. Sentence5: He snoozed for another 10 minutes before getting up.
A:
Ben