You will be given a definition of a task first, then some input of the task.
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'.

Sentence 1: We went to see the red pandas. Sentence 2: One was still awake. Sentence 3: He was running around happily. Sentence 4: Everyone laughed at his funny antics. Sentence 5: We watched them for a long while. Choices: a. Zoo. b. Home Depot.
Output:
a