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: Return Fire. Sentence 1: A couple of people gathered in the parking lot. Sentence 2: They ignited a few fireworks. Sentence 3: Dan had to reignite some of them. Sentence 4: However, he got burned by one of the sparks. Choices: a. The officer immediately arrested him. b. His mom took him to the hospital to get a few stitches.
Example Output: b

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: Greedy Friend. Sentence 1: Tom took his girlfriend out to eat. Sentence 2: He told her that he can order anything that she wants. Sentence 3: She picked the most expensive items on the plate and ordered drinks. Sentence 4: The total bill came out to be $145 dollars. Choices: a. Tom had to withdraw money from his savings. b. They arranged for a tech to come out and fix it for Matthew.
Example Output:
a