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'.

Example Input: Sentence 1: Yesterday I went on a hike. Sentence 2: We walked six miles on the trail. Sentence 3: I was ready to pass out, I was so tired. Sentence 4: Towards the end it started to rain. Sentence 5: Thankfully then, the hike was cut short. Choices: a. Bad hike. b. Frigid north end.
Example Output: a

Example Input: Sentence 1: I broke my flip phone. Sentence 2: It was a flip phone. Sentence 3: The phone would not close properly. Sentence 4: Verizon said they would replace the phone. Sentence 5: My phone was the only kind they would replace for free. Choices: a. Broken Phone. b. Reading a Book.
Example Output: a

Example Input: Sentence 1: The man saw a friend at a coffee shop. Sentence 2: He challenged his friend to a game of chess. Sentence 3: His friend agreed. Sentence 4: His friend offered a bet. Sentence 5: They played a game for money. Choices: a. Chess. b. Peter's peppers.
Example Output:
a