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.
Q: Sentence1: Kelly was very mad at Madison and refused to talk to her. Sentence2: Kelly was mad that Madison stole her boyfriend. Sentence3: She decided to confront her about it. Sentence4: When she confronted her about it, Madison defined everything. Sentence5: Therefore Kelly decided to dump her as a friend.
A:
Kelly, Boyfriend, Madison, Friend