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: Joey and June molded the moist sand into a mound. Sentence2: They used cups to shape turrets on top. Sentence3: They dug a channel for a moat around their building. Sentence4: Then they used buckets to fill the moat with water. Sentence5: Finally, after much work, they were proud of their complete castle!
Output:
June, Joey