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: Ana needed gas in her car. Sentence2: But the prices in her town were so high! Sentence3: She took a drive out the the reservation. Sentence4: There, gas was almost a dollar cheaper. Sentence5: Ana filled her tank at the reservation!
Example Output: Ana

Example Input: Sentence1: A friend of ours told us to watch a show called Blippy. Sentence2: It is this odd show on Youtube. Sentence3: It is nothing special, just a show aimed for kids. Sentence4: It made me think I can maybe create a show. Sentence5: I should really think about doing that and making a ton of money.
Example Output: I (myself), Ours, Kids, Friend

Example Input: Sentence1: Charlie was very tired. Sentence2: His mother did not want him to sleep yet. Sentence3: She decided to turn on cartoons for him. Sentence4: He watched his shows with excitement. Sentence5: When bedtime came, Charlie did not want to sleep.
Example Output:
Charlie, His mother