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: Liam signed up for an internet dating website. Sentence 2: He went on a date with a girl named Shelly. Sentence 3: Shelly talked the whole time about her ex-boyfriends. Sentence 4: Liam noticed Shelly had a piece of food stuck to her front tooth. Sentence 5: Liam never told Shelly about the food. Choices: a. Online Dating. b. Rocket.
a