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: Marion's apartment had a postal pick-up protocol. Sentence 2: Outgoing mail was to be left on a ledge by the door. Sentence 3: One day Marion put an important envelope on the ledge. Sentence 4: It was ignored and left on the ledge. Sentence 5: From then on Marion brought outgoing mail to the post office. Choices: a. Post Office. b. New tablet.

a