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 bird sat in the tree early that morning. Sentence 2: It began to feel rather alone. Sentence 3: It started cawing loudly from the branch. Sentence 4: No other birds appeared in the tree. Sentence 5: The bird simply sang, waking everyone in the neighborhood. Choices: a. Wondering. b. Caw.

b