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: Consider Input: Sentence1: Lillie was always nervous leaving work. Sentence2: Her car was parked in a parking garage. Sentence3: One night, she heard footsteps and was soon attacked by an assailant. Sentence4: She got away and called the police immediately. Sentence5: She decided to pay more for outside parking and carried weapons.

Output: Lillie, Assailant, Police

Input: Consider Input: Sentence1: Melinda heard a noise. Sentence2: There was a burglar in her house! Sentence3: She called the police. Sentence4: They rushed over and arrested him. Sentence5: Melinda no longer felt safe.

Output: Melinda, Burglar, Police

Input: Consider Input: Sentence1: Gina and her family had just moved to a new neighborhood. Sentence2: They didn't know any of the kids on the block. Sentence3: After a week her brother had a new friend. Sentence4: This new friend was named was Joe. Sentence5: Gina didn't like the look of Joe, so she avoided him for months.
Output: Joe, Gina, Brother, Family, Kids