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: Consider Input: Sentence1: Hank made an appointment to see a house. Sentence2: He was supposed to meet the realtor at his office. Sentence3: Hank didn't see the agent's office and drove right by it. Sentence4: He continued on to the house itself. Sentence5: Hank called the agent to ask to meet him there at the house instead.

Output: Hank, Realtor

Input: Consider Input: Sentence1: Bob bought a bag of potato chips from the store. Sentence2: It was a huge bag meant for a family. Sentence3: But Bob ripped open the bag and dove in. Sentence4: He didn't live that far from the store. Sentence5: Even still, he was finished by time he got home!

Output: Bob, The store

Input: Consider Input: Sentence1: My dog and I hiked up to the top of the mountain. Sentence2: He sniffed the ground. Sentence3: I looked at the scenery. Sentence4: He barked at a squirrel and ran away. Sentence5: I never went hiking with him again.
Output: I (myself), Dog, Squirrel