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: Richard was driving to work. Sentence 2: He wanted to buy a cup of coffee. Sentence 3: He pulled into a Starbucks. Sentence 4: Richard got out of his car. Sentence 5: He went into the Starbucks. Choices: a. Ian's Snacks. b. coffee time.

b