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: When Lana was pregnant, she was in a car accident. Sentence2: She was taken to the hospital for x-rays. Sentence3: Months later, the baby was born with a clubfoot. Sentence4: Lana sued the hospital for giving her x-rays while pregnant. Sentence5: She received a settlement, which she put aside for her son.
Example Output: Baby, Lana

Example Input: Sentence1: Aaron was a stunt rider at a carnival. Sentence2: He jumped into a metal ball with other motorcyclists. Sentence3: They drove in circles around each other upside down. Sentence4: Once Aaron hit the other motorcyclist and broke his jaw. Sentence5: Now he is more careful but will never quit doing what he loves.
Example Output: Motorcyclists, Aaron

Example Input: Sentence1: Anna was visiting America. Sentence2: She went on a trip to see the forests and lakes. Sentence3: Then she saw a majestic bald eagle soaring. Sentence4: She had seen the American symbol of freedom! Sentence5: Anna was proud and happy to have seen the eagle during her trip.
Example Output:
Eagle, Anna