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 was at the beach. Sentence 2: I was trying to ride on the Boogie Board. Sentence 3: I thought it would be fun to go out deep. Sentence 4: I lost track of the board. Sentence 5: It floated away. Choices: a. Adam. b. Boogie Board.

b