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: Alex and Kiley were hanging out one weekend. Sentence 2: They decided to watch a movie one morning. Sentence 3: When it ended they decided to just put on another. Sentence 4: Soon they found themselves watching movies for days in a row. Sentence 5: They didn't come out of their marathon until the end of the weekend. Choices: a. New phone. b. The Movie Marathon.

b