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: I had saved up enough money to go on a week long vacation. Sentence 2: I took off of work in preparation and packed everything up. Sentence 3: After hours of packing, my girlfriend and I left for the airport. Sentence 4: We spent five relaxing days on pristine beaches with clear water. Sentence 5: We were sad to come home but excited to plan our next vacation. Choices: a. Erin's Fall. b. Going on Vacation.

b