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: Ken went skiing with friends. Sentence2: He was new to the whole thing. Sentence3: They all went too high up and he tried to follow. Sentence4: Ken tumbled the entire way down. Sentence5: He stopped skiing and just stayed by a fireplace.
Solution:
Ken, Friends