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: Jake made a ham sandwich. Sentence 2: He laid it down on the table to go upstairs. Sentence 3: When he came back down, the sandwich was gone. Sentence 4: He looked around and couldn't find it. Sentence 5: His dog had eaten it. Choices: a. Tired. b. Ham Sandwich.

b