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: 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.
Example Output: a

Example Input: Title: Bad tooth. Sentence 1: Nolan had a bad tooth. Sentence 2: But he refused to go to the dentist. Sentence 3: As the pain was getting more intense every day, he had no choice. Sentence 4: He called for an emergency appointment. Choices: a. When the tooth was out, Nolan was grateful to be pain-free. b. The bad news is they don't have a single dress above a size 5.
Example Output: a

Example Input: Title: Diana.. Sentence 1: Diana was on a trip to visit her uncle when she picked up 2 strangers. Sentence 2: On the way there she got a bad stomach ache and had to stop. Sentence 3: She pulled over to a gas station and asked to use the bathroom. Sentence 4: When she was there she had a hard time getting through the whole thing. Choices: a. When she was done she went outside and realized she had been robbed. b. Rob bought an awesome pair of red shoes and wore them home.
Example Output:
a