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: Ota took her dog for a walk. Sentence 2: The dog got away from her. Sentence 3: A young boy chased after the dog. Sentence 4: He caught the dog's leash. Sentence 5: The boy returned the dog to Ota. Choices: a. The Fleeing Dog. b. Love over lust.

a