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: Mary spent the afternoon walking the streets of Barcelona. Sentence 2: She stopped in a cafe for something to eat. Sentence 3: She sat at a table to read and eat her food. Sentence 4: She left her book on the table while she used the bathroom. Sentence 5: When she returned, she found her book had been stolen. Choices: a. Mary's Book. b. Road Map.

a