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.

Ex Input:
Sentence1: I got up early the day we were leaving for vacation. Sentence2: I packed bags for each of my kids. Sentence3: I even packed a bag of stuff for the dog. Sentence4: I loaded the car and we got an early start. Sentence5: Thirty miles down the road I realized I hadn't packed a bag for me.

Ex Output:
I (myself), Dog, My kids

Ex Input:
Sentence1: Francis decided to do some baking. Sentence2: He couldn't decide what to bake. Sentence3: He thought about cookies, but decided not to. Sentence4: Finally, he made some croissants. Sentence5: They burned!

Ex Output:
Francis

Ex Input:
Sentence1: I was talking to my neighbor this morning. Sentence2: He said that there is a loose cat going around the neighborhood. Sentence3: I told him that I thought I saw it, also. Sentence4: When I went back inside, I heard a small "meow". Sentence5: The cat had been following me and got inside my house.

Ex Output:
I (myself), The cat, Neighbor