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.

Sentence1: It was Halloween and all of my neighbors are out. Sentence2: I decided to dress up as a pizza. Sentence3: Walking around the neighbor, I came across a neighbor. Sentence4: He was walking his dog. Sentence5: The dog thought I was a real pizza and chased me.
I (myself), Neighbors, Dog, A neighbor