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: The boy climbed a tree. Sentence 2: He got covered in sap. Sentence 3: His mom was upset that he was all sticky. Sentence 4: The boy tried to wash it off. Sentence 5: The sap took a very long time to get off the boy. Choices: a. Climb. b. Winning the Lottery.

a