Instructions: 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 wearing a new t-shirt. Sentence 2: He went to a bar with black lights. Sentence 3: The shirt was illuminated in select areas. Sentence 4: It turned out there was a message that came through. Sentence 5: Tom hadn't noticed it before that night. Choices: a. Hidden Message. b. Wrong Order.
Output:
a