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: Ruined Carpet. Sentence 1: Tom had a big date. Sentence 2: He invited her over to his place. Sentence 3: They had dinner and wine. Sentence 4: Tom's date dropped her wine. Choices: a. It ruined his carpet but he didn't care. b. The technician allowed her to donate blood.
Example Output: a

Example Input: Title: Bird cages. Sentence 1: Cecilia was very agile with her hands. Sentence 2: She liked constructing bird cages. Sentence 3: She had many orders from all her neighbors. Sentence 4: But as she worked very slowly, she couldn't fulfill them all. Choices: a. She had to hired friends to finish her tasks. b. But in the end, with beginner's luck, she won and cheered.
Example Output: a

Example Input: Title: Crash. Sentence 1: Alex was riding his motorcycle. Sentence 2: The asphalt was wet because it had just rained. Sentence 3: A car next to him suddenly merged without signaling. Sentence 4: Since it was wet, Alex could not stop in time. Choices: a. Alex laid down the bike like he was taught and let it hit the car. b. The captain gasped and they hit the underside of the boat.
Example Output:
a