Detailed Instructions: 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: Joe was a police officer. Sentence2: Joe was patrolling the streets of the city in his cruiser. Sentence3: Suddenly, Joe was alerted to a crime happening near him by dispatch. Sentence4: Joe responded to the scene and found a bank robber fleeing on foot. Sentence5: Joe arrested the criminal and was promoted.
Solution:
Bank robber, Joe