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 Q]: Sentence1: Jacob noticed his dog was whining. Sentence2: Jacob investigated and found his dog's leg hurt. Sentence3: He took the dog to see the vet. Sentence4: The vet made a cast to set the hurt leg. Sentence5: Within a few weeks, Jacob and his dog were playing again!
[EX A]: Jacob, Vet, Dog

[EX Q]: Sentence1: Susie was having a costume party. Sentence2: She invited all of her friends. Sentence3: She dressed up as a cat. Sentence4: Her friends loved it. Sentence5: Susie ended up winning the costume contest at the party.
[EX A]: Susie, Her friends

[EX Q]: Sentence1: I was in my bedroom. Sentence2: It was very late at night. Sentence3: I heard a huge bang. Sentence4: Terrified, I went to investigate. Sentence5: It turned out to be just a stray cat.
[EX A]:
I (myself)