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.

Ex Input:
Sentence1: They planted a sunflower garden at their house in the city. Sentence2: They watched it grow all summer. Sentence3: The traffic by their house got heavy when the sunflowers bloomed. Sentence4: Many people yelled something nice as they drove past the garden. Sentence5: When the sunflowers died the traffic went back to normal.

Ex Output:
Other people

Ex Input:
Sentence1: Jimmy woke up early. Sentence2: As he ate breakfast, he read the note from him mom to mow the yard. Sentence3: It was already getting hot so he went into the garage for the mower. Sentence4: After gassing it up, he mowed the backyard quickly. Sentence5: He got to have a treat for finishing his chore.

Ex Output:
Jimmy, Mom

Ex Input:
Sentence1: Halie adopted a foster cat. Sentence2: The cat was disturbed, having been abused in her previous homes. Sentence3: Halie put her full effort into retraining her. Sentence4: The cat would not stop scratching and biting people. Sentence5: Halie had to put the cat down.

Ex Output:
Halie, Foster cat