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: A man was smoking a cigar on the beach. Sentence2: The stranger came up to the man and asked to borrow a lighter. Sentence3: The man dug through his pockets and couldn't find it. Sentence4: The stranger sighed and walked away. Sentence5: The man smiled and brandished his lighter when the other man left.
Solution:
Stranger, Man