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: Last year, my special needs son went trick or treating. Sentence2: This was his first time to go trick or treating on his own. Sentence3: I watched from a distance as he used sign language to say the words. Sentence4: He was so happy, having gotten lots of candy. Sentence5: The neighborhood was very kind to him that night.
Output:
My special needs son, I (myself), The neighborhood