You will be given a definition of a task first, then some input of the task.
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: After seeing a scary man in the street, we went indoors. Sentence2: I called the neighbor and asked him to take a look. Sentence3: A former police officer, he went outside to talk to the man. Sentence4: He came to my door to explain. Sentence5: The man had dementia and was deaf, and didn't hear me talk to him.
Output:
I (myself), Neighbor, Man, Officer