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 road to recovery was long. Sentence 2: He went an entire week without drinking. Sentence 3: He wanted to cave so badly. Sentence 4: She was firm and refused to buy any. Sentence 5: He was angry but understood. Choices: a. Recovery. b. Lamp.
Example Output: a

Example Input: Sentence 1: Alice wanted to try some highlights. Sentence 2: Her hair was looking rather dull. Sentence 3: So she bought a box to do it. Sentence 4: But it turned out streaky orange. Sentence 5: She had to go to a salon to fix it. Choices: a. Waffles or pancakes. b. Trying some highlights.
Example Output: b

Example Input: Sentence 1: Jane decided to take a trip to the Caribbean. Sentence 2: While on her trip, Jane was bitten by a mosquito. Sentence 3: Jane started to feel ill after being bitten. Sentence 4: Jane went to the hospital upon her return home. Sentence 5: Jane was diagnosed with the Zika virus. Choices: a. Sophia's Investment. b. Illness.
Example Output:
b