Given the task definition and input, reply with output. 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: The man leaned in for a kiss. Sentence 2: The woman turned her head. Sentence 3: The man grabbed the woman. Sentence 4: The woman slapped the man. Sentence 5: The man let go of the woman. Choices: a. Kiss. b. Holiday.
a