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: The teenage girls were exploring the streets of New York City. Sentence2: They stopped at a shop selling miniature dollhouse furniture. Sentence3: They decided to look closer inside the store. Sentence4: The door was locked but the proprietor buzzed them in. Sentence5: The furniture cost hundreds of dollars so they did not buy anything.
Output:
The proprietor, Teenage girls