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: Dan's friends invited him out for drinks at the bar. Sentence 2: Dan, however, was tired from work and wanted to leave. Sentence 3: Dan decided he would go home instead of staying at the bar. Sentence 4: Dan's friends were disappointed that he was leaving. Sentence 5: In fact, Dan's friends called him a Party Pooper. Choices: a. Party Pooper. b. Alcoholism.
Output:
a