In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Example Input: Title: The Seashore Song. Sentence 1: Once, there lived a brother and sister who lost their family. Sentence 2: They were so sad. Sentence 3: They prayed for a sign that their parents were watching them. Sentence 4: One day, they went to the beach. Choices: a. When they heard the ocean's song, they knew their parents were there. b. They were pumped up and ready to play!
Example Output: a

Example Input: Title: Safe Car. Sentence 1: The wife picked a car for her husband. Sentence 2: She bought the safest car she could find. Sentence 3: Her husband was in an accident. Sentence 4: The car saved the husband's life. Choices: a. Caleb fell asleep watching the movie. b. The couple people became lifelong customers of that car company.
Example Output: b

Example Input: Title: Cheese. Sentence 1: Mary was making tacos for dinner. Sentence 2: In the middle of cooking she realized she had forgotten to buy cheese. Sentence 3: She asked her husband to run to the store and buy some. Sentence 4: He husband was annoyed, but went anyway. Choices: a. Ken was sad when it finally passed away. b. The family enjoyed their tacos with cheese that evening.
Example Output:
b