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.
Q: Sentence1: Raven was searching for a new music device. Sentence2: She went to best buy. Sentence3: SHe was thinking of buying the ipod or the zune. Sentence4: The worker told her that nobody buys the zune. Sentence5: She bought the ipod.
A:
Zune, Worker, Raven