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: Kelly was riding a train home from college. Sentence 2: She was enjoying her ride when she felt a hard stop. Sentence 3: She bounced in her seat but was mostly okay. Sentence 4: To her shock, the train had actually crashed. Sentence 5: She was just glad that she was injury free. Choices: a. DNA. b. The Train Crash.
Output:
b