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: Nelly is visiting her friend. Sentence 2: Her friend has a really big dog. Sentence 3: Nelly is afraid to go anywhere near it. Sentence 4: Nelly avoids the dog her whole time there. Sentence 5: Nelly is afraid of her friends dog. Choices: a. Nelly is scared. b. Duplicate Title.

a