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: The man bought some perfume. Sentence 2: He gave it to his wife. Sentence 3: His wife wouldn't wear it. Sentence 4: The man liked the scent. Sentence 5: The man used all of the perfume. Choices: a. perfume. b. kill.
Example Output: a

Example Input: Sentence 1: Tom's girlfriend had dogs. Sentence 2: She asked him to pick them up some food. Sentence 3: Unfortunately Tom didn't know much about it. Sentence 4: He got the wrong kind of food. Sentence 5: His girlfriend had to pick out the right kind. Choices: a. Organizer for Hire. b. Dog Food.
Example Output: b

Example Input: Sentence 1: Rachel wanted to get into better shape. Sentence 2: She decided to try boxing because it looked like fun. Sentence 3: She practiced hitting the punching bag and decided to try sparring. Sentence 4: The first time she sparred with a friend, she broke her nose. Sentence 5: She took a break from boxing after that. Choices: a. Boxing. b. The Straw Hat.
Example Output:
a