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: Ed put the sandwich he made himself on the table for a moment. Sentence 2: When he came back into the kitchen it was gone. Sentence 3: He looked around thinking maybe he put it somewhere else. Sentence 4: He walked into the living room to check the coffee table. Sentence 5: As he did, he saw his dog gobbling down the last bite of sandwich. Choices: a. Summer Home. b. Missing Sandwich.

b