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: Henry purchased a bag of chips from the grocery store. Sentence 2: He drove home. Sentence 3: The chips he ate tasted stale. Sentence 4: A few pieces got caught in his teeth. Sentence 5: Since he opened the bag, he couldn't request a refund. Choices: a. White Water Rafting. b. New Bag, Stale Chips.

b