Definition: In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.
Input: Sentence 1: Colton had a sick dog. Sentence 2: He brought the dog to the vet. Sentence 3: The vet suggested that the dog stay overnight. Sentence 4: Colton followed the vet's suggestions. Sentence 5: The vet nursed the dog back to health. Choices: a. Dolphin experience. b. The Sick Dog.

b