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: Sean was in a bad mood. Sentence2: And he realized that his room was a mess. Sentence3: He decided to clean up and organize everything. Sentence4: And his room looked beautiful. Sentence5: And Sean was in a bad mood less often.

SOLUTION: Sean

PROBLEM: Sentence1: Maria was very sad. Sentence2: She used Kleenex to dab at her tears. Sentence3: When she'd used the whole box, she got another out of the cabinet. Sentence4: She blew her nose a few times when she was done crying. Sentence5: The Kleenex were all soaked.

SOLUTION: Maria

PROBLEM: Sentence1: Andrew was taking his little cousins to ride go karts. Sentence2: He called them to see if they were ready to be picked up. Sentence3: They were ready to be picked up. Sentence4: So Andrew picked them all up and drove them to ride go karts. Sentence5: They all had fun riding go carts.

SOLUTION:
Cousins, Andrew