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: Shelly has been playing Pokemon Go a lot on her phone. Sentence 2: She walks around the neighborhood to catch them. Sentence 3: She doesn't pay attention well and stumbled over the sidewalk. Sentence 4: When she landed she twisted her foot and broke her toe. Sentence 5: Now she has to wear a little cast until it heals. Choices: a. No Return. b. How Shelly Broke Her Toe.

b