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: Ava needed a root canal badly- she was always in pain. Sentence2: But she was terrified of dentists! Sentence3: Finally the agony drove her to make an appointment. Sentence4: The dentist was very kind when she arrived, and put her at ease. Sentence5: And to her shock, the root canal didn't hurt one bit!
Dentist, Dentists, Ava

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: Pippa sighed as she looked at her earnings for the evening. Sentence2: It had been a very long and tiring day. Sentence3: She wasn't going to bed until she met her goal though. Sentence4: Pippa ground out enough Zing hits to reach her goal. Sentence5: Pippa sighed contentedly as she snuggled into her sheets.
Pippa