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: I live near a large University. Sentence 2: Yesterday, a young woman rang my doorbell. Sentence 3: She wanted to buy a bike from me, but I'm not selling one. Sentence 4: It turns out the bums who live in my apartment house sell old bikes. Sentence 5: I warned her away, and she thanked me with a smile. Choices: a. Bowling. b. College.

b