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: Tina was hiking with her sister. Sentence 2: They were crossing a river. Sentence 3: They got stuck on a rock with a copperhead. Sentence 4: There was no way for them to get away. Sentence 5: Tina had to kill the snake with a stick. Choices: a. Cornered by a Copperhead. b. No Soda.

a