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: Joe was bit by a cat when he was very young. Sentence2: Since then, he has always been scared of cats. Sentence3: One day at school, a cat came up to him and played with him. Sentence4: Joe had a lot of fun with the cat. Sentence5: Now, Joe is not scared of cats.
Joe, Cat

Sentence1: My mother and I were hit by lightning. Sentence2: We both had just gotten into the car. Sentence3: The entire car shook for a few seconds and all the window lit up. Sentence4: We both couldn't believe it and looked at each other. Sentence5: Then we drove away.
I (myself), My mother

Sentence1: Katherine loved watching her grandfather in his garden as a child. Sentence2: The idea of tending to a garden always appealed to Katherine. Sentence3: Katherine was hesitant to plant a garden due to time constraints. Sentence4: Katherine decided she would start simple with an herb garden. Sentence5: Katherine did some research and planted her first herb garden.
Katherine, Grandfather