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: Steve's dog barked at everything. Sentence2: The little terrier jumped and yapped loudly when anyone arrived. Sentence3: One day, a burglar approached the door, and the dog barked fiercely. Sentence4: The burglar was scared, and decided to not break into the house. Sentence5: The dog's barking had finally paid off.
Output:
Steve, Dog, Burglar