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'.

Ex Input:
Sentence 1: Melody was a grandma and helped to raise her daughters kids. Sentence 2: One day Melody has a terrible headache. Sentence 3: The pain continued for days. Sentence 4: She went to the doctor and tests were ran. Sentence 5: They found that she had brain cancer. Choices: a. Headache. b. Photo.

Ex Output:
a

Ex Input:
Sentence 1: Chauncy woke up this morning and found her trees had been TPed. Sentence 2: She tried to clean up the mess but some of the toilet paper high up. Sentence 3: Instead of using a ladder, she decided to burn it. Sentence 4: A small piece of paper drifted away and set the yard on fire. Sentence 5: Chauncy watched in disbelief as the fire quickly spread to her house. Choices: a. Homesick. b. What was she thinking.

Ex Output:
b

Ex Input:
Sentence 1: My former coworker has a sixteen year old daughter. Sentence 2: This spring they took a cruise from Boston to the Bahamas. Sentence 3: Three hours out of port, the daughter had severe stomach cramps. Sentence 4: She had appendicitis and had to be airlifted back to Boston. Sentence 5: The airlift made the local news. Choices: a. Appendicitis. b. Petting a cat.

Ex Output:
a