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: Tom was out with friends. Sentence 2: His mom didn't set a curfew but called to check in on him. Sentence 3: She told him that she was waiting up for him. Sentence 4: Tom felt bad about the situation. Sentence 5: He decided to go home at a reasonable time. Choices: a. Waiting Up. b. Lazy Workers.

a