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.

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.
Jimmy, Mom

Sentence1: Kerry enjoyed playing games on her smartphone. Sentence2: She mostly played free games that made revenue through ads. Sentence3: One day her favorite game had a major update. Sentence4: The new version had many more ads which were more intrusive in nature. Sentence5: Kerry's interest the game waned.
Kerry

Sentence1: The work day started out the same as always for Stan. Sentence2: He made some coffee and dragged himself to his desk. Sentence3: No sooner had he sat down than an attractive coworker came to him. Sentence4: She had concert tickets and wanted to know if he wanted to come. Sentence5: Stan declined because he was averse to having any kind of fun at all.
Stan, Coworker