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: Steve got home late from work and pulled into his parking lot. Sentence 2: He was annoyed to see there was a car parked in his reserved spot. Sentence 3: He left a note on the car and went to find street parking. Sentence 4: The next morning, there was a note taped to Steve's front door. Sentence 5: It was from a new neighbor, who apologized profusely for the mistake. Choices: a. Parking Problems. b. A Weighty Problem.

a