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: Will woke up with a pain in his left leg. Sentence 2: The pain only worsened as the day went along. Sentence 3: Will dropped by the doctor's after work. Sentence 4: There he learned that he had a blood clot in his leg. Sentence 5: Going to the doctor may have saved Will's life! Choices: a. Superstar. b. Clot.

b