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: Mike was getting a bad case of insomnia. Sentence 2: He decided to go for a run to tire himself out. Sentence 3: He went on to run for an hour around his neighborhood. Sentence 4: By the time Mike got back he was absolutely exhausted. Sentence 5: Mike ended up sleeping in! Choices: a. Frisbee Record. b. Insomnia.

b