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 went to work full of energy for the day. Sentence 2: He sat down at his office desk to check his meeting schedule. Sentence 3: Unfortunately, he had a day full of boring staff meetings. Sentence 4: He cried a little to himself as he contemplated his afternoon. Sentence 5: Poor Joe was stuck in the meetings all day long. Choices: a. Staff Meeting Purgatory. b. Missing Professor.

a