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.

Example Input: Sentence1: My mom made pancakes for breakfast the other day. Sentence2: While she was making pancakes she ran out of pancake batter. Sentence3: I had to run to the store to get more batter. Sentence4: When I got back the pancakes she made were cold. Sentence5: I had to wait for her to make another batch before I could eat.
Example Output: I (myself), My mom

Example Input: Sentence1: Los Angeles has the worst parking ever. Sentence2: After driving around the same block five times I found a spot. Sentence3: I threw my car into park and hopped out. Sentence4: I came back in five minutes and already had a parking ticket. Sentence5: I didn't realize it was a park only on a Tuesday with a blue car zone.
Example Output: I (myself)

Example 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!
Example Output:
June, Joey