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: Tom's apartment started to flood. Sentence 2: He noticed a broken pipe under the sink. Sentence 3: Tom shut the water off. Sentence 4: He was able to buy a replacement part at the hardware store. Sentence 5: Tom stopped the leak. Choices: a. Out of Gas. b. Broken Pipe.

b