Given the task definition and input, reply with output. 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: Dan was recently on vacation in Jamaica. Sentence2: Dan was enjoying his morning nap, when he heard a loud noise. Sentence3: Dan immediately awoke, and tried to find the source of the noise. Sentence4: As Dan peeked outside, he saw a rooster crowing loudly. Sentence5: Dan was annoyed that his nap was ruined by a crowing rooster.
Dan, Rooster