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: Billy, John, and David went to the little league field. Sentence2: They wanted to practice before their big game tomorrow night. Sentence3: Billy found the maintenance man and asked him to turn on the lights. Sentence4: They maintenance man turned the lights on so they could practice. Sentence5: The boys practiced playing late into the evening.
Solution:
Billy, John, Maintenence man, David