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: Hugo got a letter in the mail today. Sentence 2: It said that something big would happen in two weeks. Sentence 3: Huge marked his calendar and waited. Sentence 4: On the day of he went outside and looked around. Sentence 5: At the edge of his yard, he saw mean looking man with a gun. Choices: a. The Letter. b. Horace Replaces a Bulb.
Output:
a