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: 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.
Example Output: Melinda, Burglar, Police

Example Input: Sentence1: Miranda had a craving for something salty. Sentence2: She tried to eat some chips but she still craved something. Sentence3: She decided she craved something meaty instead. Sentence4: She went to McDonald's and bought a large order of chicken nuggets. Sentence5: Her craving for something salty and savory was satisfied.
Example Output: Miranda

Example Input: Sentence1: Grant was put in a team. Sentence2: They were assigned a sock client. Sentence3: They researched. Sentence4: They made a cool ad campaign. Sentence5: Grant got a raise.
Example Output:
Team, Client, Grant