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: Bob walked nervously up to the pool's diving board. Sentence 2: He had never jumped off it before, but he was determined. Sentence 3: His parents encouraged him from their pool chairs. Sentence 4: When he was at the edge of the board, he stood still. Sentence 5: After about ten seconds, he finally jumped. Choices: a. The Dinosaur. b. Deep End.

b