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: Matthew couldn't find his favorite watch. Sentence 2: He looked on his desk. Sentence 3: He checked under his bed. Sentence 4: Matthew even went into the bathroom to find his watch. Sentence 5: His mother found the watch inside his backpack. Choices: a. Learning to Ride. b. The Watch.

b