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: Pinata. Sentence 1: At morgan's birthday party, we set up a pinata. Sentence 2: The first girl to swing does not break the pinata. Sentence 3: The next boy hits one of the legs off the pinata. Sentence 4: Morgan takes one big swing and the pinata explodes. Choices: a. All the kids collect their chocolaty goodies. b. He thought that he might visit there again someday.
Example Output: a

Example Input: Title: A Hot Bed. Sentence 1: The couple decided to acquire two cats for pets. Sentence 2: They studied and learned that cats have a body temperature of over 102. Sentence 3: They found an electric cat bed that heats to 102 when a cat is in it. Sentence 4: They bought the heated cat bed. Choices: a. The cats do sleep in the bed every night and some daytime too. b. Ashley hated her brother because of it.
Example Output: a

Example Input: Title: Lost Boy. Sentence 1: Larry went on a camping trip with his younger brother. Sentence 2: During an evening hike, they got separated. Sentence 3: Larry called out his brother's name, but there was no answer. Sentence 4: As night fell, Larry began to get worried. Choices: a. I looked really good in the suit I bought. b. Larry returned to the campsite, where his brother was waiting for him.
Example Output:
b