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: We drove home quietly, my son asleep in the backseat. Sentence2: He was given painkillers to help with the broken bones. Sentence3: We took him home and put him to bed. Sentence4: We fed him ice cream while he watched movies. Sentence5: We all snuggled together and enjoyed a quiet afternoon.
Output:
Son