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: Mark's meal. Sentence 1: When lunchtime rolled around Mark's stomach was very grumbly. Sentence 2: He hadn't eaten all day and was quite hungry. Sentence 3: But he brought no food from home to eat. Sentence 4: One of his workmates though invited him out to lunch. Choices: a. They had chicken tikka masala. b. And they danced all night better than he did with his broom.
Example Output: a

Example Input: Title: New heels. Sentence 1: Sally wanted new heels. Sentence 2: She knew they were not in her budget. Sentence 3: She decided to buy them anyway. Sentence 4: She regretted her decision. Choices: a. Stunned and heartbroken, Kendra didn't know what to do. b. She had to save the rest of the month.
Example Output: b

Example Input: Title: The Stolen Bike. Sentence 1: Max had left his bike on his yard after school. Sentence 2: When he went to put it away in the garage it was missing. Sentence 3: Max's dad went and searched the neighborhood. Sentence 4: He spotted the bike in another kid's driveway. Choices: a. Luckily he just took it back and it was fine. b. John ended up going out to get wings!
Example Output:
a