TASK DEFINITION: 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.
PROBLEM: Sentence1: Mr Jones was the warden at the jail. Sentence2: He would lock criminals up until they were free to go. Sentence3: He did not like his job very much. Sentence4: He tried not to talk to the criminals. Sentence5: He just wanted the day to be over so he could go home.

SOLUTION: Criminals, Mr jones

PROBLEM: Sentence1: Sam was making homemade fries for the first time. Sentence2: He had stepped out of the kitchen when he smelled smoke. Sentence3: He ran into the kitchen and saw an oil fire. Sentence4: He remembered to smother it instead of using water. Sentence5: Luckily, the fire was subdued and didn't make too much damage.

SOLUTION: Sam

PROBLEM: Sentence1: Jules wandered into a magic shop. Sentence2: The store owner showed Jules several captivating illusions. Sentence3: Jules was delighted, and decided to purchase some of the tricks. Sentence4: After a lot of practice, Jules had the illusions mastered. Sentence5: He performed the tricks for friends, and left them amazed.

SOLUTION:
Jules, Store owner, Friends