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: Gus thought the u-haul he rented was too big. Sentence 2: He'd only wanted the 15 footer, but they'd given him the 17. Sentence 3: He was surprised when he had it almost filled up. Sentence 4: Gus still had chairs and tables to load that couldn't fit. Sentence 5: He was bummed that he'd underestimated how big he needed it. Choices: a. Wasn't Big Enough. b. Albert.
Output:
a