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: Manny was driving down the street when he saw a car wreck. Sentence2: He got out of the car to investigate. Sentence3: There was a man lying in the middle of the road. Sentence4: The man was unconscious and his heart wasn't beating. Sentence5: When the ambulance came, they found Manny giving CPR to the man.
Output:
Manny, People in ambulance, A man