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: Tom was out swimming with friends. Sentence 2: They were at a local pool. Sentence 3: Tom noticed his watch was missing. Sentence 4: He tried looking all over the pool for it. Sentence 5: A friend found it on the floor. Choices: a. The Best Man. b. Lost Watch.

b