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: Jen walked out of the mall only to find her car was gone. Sentence2: She looked around frantically. Sentence3: Finally she called mall security. Sentence4: As they started questioning her she realized her car wasn't missing. Sentence5: She had gone out of the wrong door of the mall.
Solution:
Jen, Mall security