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: Lauren and Maxwell went camping at Yosemite. Sentence 2: They decided to hike a twenty mile trail the first night. Sentence 3: When they got back to the campsite Maxwell realized he lost his keys. Sentence 4: He was in a pure panic not knowing how far away he dropped them. Sentence 5: Lauren, with a huge smile reached into her pocket and pulled out keys. Choices: a. Hiking Trip. b. Recycling.

a