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: We moved to Cambridge in 2013. Sentence 2: Our building sponsored a Christmas party in December. Sentence 3: It started at 6 PM. Sentence 4: We went at 6:30 and had to sit in a smaller room. Sentence 5: The next year we went right at 6 to get better seats. Choices: a. The Ballet Photo. b. Xmas Dinner.

b