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: Warren didn't like beets and told his mom repeatedly. Sentence2: But as she never listened, he had some on his plate for dinner. Sentence3: He tried to give them to his dog. Sentence4: The dog sniffed them and walked away. Sentence5: Warren refused to eat the beets as his dog didn't want them either.

SOLUTION: Dog, Mom, Warren

PROBLEM: Sentence1: Jim was sitting alone in his room, bored. Sentence2: He decided to go out and do something. Sentence3: He tagged the stop sign at the end of his street. Sentence4: A cop sat in his cruiser and watched him do it. Sentence5: Jim got sentenced to six months in juvenile detention.

SOLUTION: Cop, Jim

PROBLEM: Sentence1: My coworker and I weigh 250 pounds each. Sentence2: We decided to do a stand off 50 pounds lost in two months. Sentence3: I spend most of my time dancing at home and outdoor excising. Sentence4: My coworker spend his time at the gym. Sentence5: End of two months i lost 51 pounds, six pounds more than my coworker.

SOLUTION:
I (myself), Coworker