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: Joe watched his dad drink a cup of coffee every morning. Sentence 2: He kept begging his dad for some. Sentence 3: Finally his dad gave in and poured him a cup. Sentence 4: Joe gagged after he took a big swallow. Sentence 5: He couldn't understand why his dad liked it so much. Choices: a. Bird's Nest. b. What's So Great About Coffee.

b