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: My friend invited me to sleep over at her house. Sentence 2: She said that I could sleep on her couch. Sentence 3: Her couch was too short, so I didn't fit on it. Sentence 4: I was awake most of the night trying to sleep. Sentence 5: When I awoke the next morning, I had overslept. Choices: a. Sleeping Over. b. The Lip Injections.

a