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: Me and some friends decided to go to the mall. Sentence 2: At the mall we visited a clothing store. Sentence 3: My friend noticed his wallet was missing before paying. Sentence 4: He could not find it anywhere, it must have been stolen. Sentence 5: Turns out he left it in the car. Choices: a. Stolen wallet. b. Building Laws.

a