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: Helpful. Sentence 1: My son went outside to play. Sentence 2: A few hours after he came back in, my neighbor came over. Sentence 3: He said he wanted to tell me how helpful my son was. Sentence 4: He told me how he helped him rake leaves on his lawn. Choices: a. The next moment I turn my head and see a big ball of fluff in my face! b. I went and found my kid and told him how proud I was.
Example Output: b

Example Input: Title: Joana. Sentence 1: Adam was a junior, but he had a huge crush on a senior named Joana. Sentence 2: He loved to write songs on his guitar, so he wrote one just for her. Sentence 3: Then, gathering his nerve he played it for her during free period. Sentence 4: Joanna's face lit up at the emotion of Adam's song. Choices: a. She asked him for a date right then and there! b. I went home feeling proud of the peach soda I had found.
Example Output: a

Example Input: Title: Messy Car. Sentence 1: Brian's car was extremely messy. Sentence 2: One morning he decided to clean it out. Sentence 3: He removed all of the clutter, but it still had stains on the seats. Sentence 4: Brian decided to take the car to a detailer. Choices: a. So I used glue to put it back together. b. He was sad that he hadn't taken better care of his car.
Example Output:
b