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: Cal had newly joined a distinguished preparatory school. Sentence2: He thought he had made friends when the other boys invited him along. Sentence3: When they were in a room alone though they all beat Cal very badly. Sentence4: Sobbing, Cal asked them why. Sentence5: The boys told him it was their way of welcoming kids to the school.
Solution:
Boys, School, Friends, Cal