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: Marie was stuck in traffic and playing a game on her phone. Sentence2: Someone tapped on her window and she recognized a cop. Sentence3: He told her to stop playing and pay attention. Sentence4: She apologized and pocketed her phone. Sentence5: She regretted it as it took an hour for the traffic to move again.

SOLUTION: Cop, Marie

PROBLEM: Sentence1: Evan was bad at science. Sentence2: He tried his best, but it just made little sense to him. Sentence3: Still, he studied diligently. Sentence4: At the end-of-year commencement he was surprised to be called onstage. Sentence5: There, Evan was given an award for Most Improved Science Student!

SOLUTION: Evan

PROBLEM: Sentence1: Tom wanted to secure his future. Sentence2: He decided to learn how to program. Sentence3: He google searched for days to determine the best language. Sentence4: He decided that Ruby was the best programming language for him. Sentence5: He bought books on Ruby and worked hard, he learned Ruby well.

SOLUTION:
Tom