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: Stolen Card. Sentence 1: Tom left his debit card at the bar. Sentence 2: He didn't realize until the next morning. Sentence 3: There were several sales on his account. Sentence 4: Tom didn't recognize any of them. Choices: a. He shut down his card and had the money returned. b. Paul had to go to the hospital to get stitches.
Example Output: a

Example Input: Title: Blank Keycaps. Sentence 1: I purchased a high-end mechanical keyboard. Sentence 2: I thought it would be good for writing and for gaming. Sentence 3: I also ordered a nice set of blank keycaps for the board. Sentence 4: The caps made it difficult for me to type on the board. Choices: a. I ended up putting back on the stock caps, and loving the board. b. They stood up and left.
Example Output: a

Example Input: Title: Soda. Sentence 1: Drew chugged an entire two liter of soda. Sentence 2: It wasn't long before he felt sick to his stomach. Sentence 3: He ran to find the nearest bushes. Sentence 4: He bent over, so nobody could see what came next. Choices: a. Keeping busy helped put her mind on other things. b. Drew threw up every ounce he had chugged.
Example Output:
b