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: Tony liked to play fetch with dogs. Sentence 2: Tony's new dog would not play fetch. Sentence 3: Tony was upset his dog wouldn't play fetch with him. Sentence 4: He started using treats to entice the dog to play fetch with him. Sentence 5: Tony was happy the dog started playing fetch with him. Choices: a. Kelli Needs a Babysitter. b. Tony and the dog that wouldn't fetch.

b