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: Jason grew up riding motorcycles. Sentence2: He won his first motorcycle race at the age of 13. Sentence3: He kept racing and improving. Sentence4: Kawasaki sponsored him at the age of seventeen. Sentence5: Jason said that gave him to confidence to win the motocross.
Example Output: Kawasaki, Jason

Example Input: Sentence1: When I was little I used to chew my fingernails as a habit. Sentence2: My mom told me if I continued doing this it would make me really fat. Sentence3: Her plan worked, as my fear of getting huge stopped my nasty habit. Sentence4: Well, one day we saw our neighbor in the store, being quite pregnant. Sentence5: I pointed at her belly, saying I knew what she had been doing!
Example Output: I (myself), Neighbor, Mom

Example Input: Sentence1: Jemma was looking forward to going to the lake today. Sentence2: However, she saw that it was going to rainy today. Sentence3: Upset, she thought about other things she could do today instead. Sentence4: She called a few of her friends and asked them to come over. Sentence5: Jemma and her friends spent the rest of the day watching movies.
Example Output:
Her friends, Jemma