Detailed Instructions: 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.
Problem:Sentence1: Ava was nervous for her doctor's appointment. Sentence2: She had to get a shot so she could go to Kindergarten. Sentence3: At her appointment she sat in her Dad's lap. Sentence4: Ava got her shot and was very brave. Sentence5: After the appointment, Ava's Dad took her to get ice cream.
Solution:
Dad, Ava, Doctor