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.

Ex Input:
Title: Natural Disasters. Sentence 1: A heavy storm was heading toward the Johnson farmhouse. Sentence 2: Mister Johnson could see it rapidly approaching and called his family. Sentence 3: The family rushed into the basement and huddled close. Sentence 4: The noise was deafening and seemed to go on for hours. Choices: a. When the storm abated, the farmhouse was in ruins. b. The sight was the highlight of the evening.

Ex Output:
a

Ex Input:
Title: The Train is Cheaper. Sentence 1: Nigel was traveling to visit his aunt. Sentence 2: He was looking at flights but they were all too expensive. Sentence 3: Then he saw that train rides were much more affordable. Sentence 4: He bought his ticket and hoped for the best. Choices: a. For the rest of his life, Jim lied for his own benefit. b. Luckily the train ride was not too bad at all.

Ex Output:
b

Ex Input:
Title: Library Books. Sentence 1: Our granddaughter Anna is two. Sentence 2: Her parents took her to the library to get a card. Sentence 3: She took out five books. Sentence 4: When the time came to return them she was not pleased. Choices: a. The parents demanded a refund. b. Her mom told her she could get more books, and she was happy.

Ex Output:
b