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: Speaking. Sentence 1: He was quite irritable. Sentence 2: He started speaking to me, so I looked up at him. Sentence 3: In the middle of talking, he snapped at me. Sentence 4: He demanded to know why I was looking at him. Choices: a. The sandwich looked disgusting by lunch time. b. I looked away, feeling hurt and angry.
Example Output: b

Example Input: Title: New Monster. Sentence 1: I brought a new puppy home from the shelter. Sentence 2: I picked the sweetest dog. Sentence 3: The second she got in the house, she went wild. Sentence 4: Everything ended up in her mouth. Choices: a. They decided to go home to shop online. b. My pillows are ruined.
Example Output: b

Example Input: Title: Muffins. Sentence 1: Tim tried to bake blueberry muffins. Sentence 2: He spooned the batter into cups and put them in the tray. Sentence 3: When the tray was ready, he took it out of the oven. Sentence 4: His muffins smelled delicious. Choices: a. He tasted them and found they tasted just as yummy! b. It was hard at first, but soon she found she was feeling much better!
Example Output:
a