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: Consider Input: Sentence 1: Tom was going out at night. Sentence 2: He wasn't sure how cold it would be. Sentence 3: He decided to wear a light coat. Sentence 4: Once out Tom realized it was too cold for that. Sentence 5: Tom eventually went home early. Choices: a. Cold Night. b. Tea.

Output: a

Input: Consider Input: Sentence 1: Mark volunteered to help with his daughter's team. Sentence 2: He was named head coach! Sentence 3: He didn't know much about soccer, but he promised he would learn. Sentence 4: The team did well that year. Sentence 5: They won all of their games! Choices: a. Woody's Broken Heart. b. The Coach.

Output: b

Input: Consider Input: Sentence 1: I used to be afraid of swimming. Sentence 2: Both deep and shallow water make me nervous. Sentence 3: I was invited to go swimming at a friend's house. Sentence 4: I lied to him by saying I was busy. Sentence 5: I felt bad for lying. Choices: a. Lakehouse. b. I went swimming.
Output: b