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.
Input: Sentence1: Donald was man with a mission. Sentence2: A mission to help people for the holidays. Sentence3: He would chop wood for them, repair their sinks, and sing carols. Sentence4: Everyone liked Donald and his help. Sentence5: Everyone chipped in and bought him new boots for Christmas.
Output:
Donald, Everyone, People