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 turned off the main road and descended down to the river. Sentence 2: I see my brother at the back of his car sorting out the gear. Sentence 3: We say hi and begin dividing up the gear into our packs. Sentence 4: We head out for the trail and begin our hike. Sentence 5: 5 miles the 1st day and a good meal to prepare us for day 2. Choices: a. Backcountry. b. The Apartment.

a