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 always suffered from back pain. Sentence 2: He decided to go to a doctor about it. Sentence 3: They took some scans and found the problem. Sentence 4: Tom had a pressed disk in his lower spine. Sentence 5: He had short outpatient surgery to get it fixed. Choices: a. Bad Song. b. Back Pain.

b