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: Spanish. Sentence 1: Kaya wanted to learn Spanish. Sentence 2: Her neighbor was a Mexican who wanted to improve her English. Sentence 3: The two girls agreed to practice and help each other. Sentence 4: Every day they got together to study. Choices: a. That made Anna and her parents both very happy! b. After a few weeks, each was much improved in the others' language!
Example Output: b

Example Input: Title: Son of a Beach. Sentence 1: Nina was almost nine months pregnant. Sentence 2: She was enjoying a nice sunny day at beach. Sentence 3: She started feeling a terrible pain. Sentence 4: Luckily a doctor was there because she went into labor in the sand. Choices: a. She named her newborn baby girl Cici after her birthplace. b. She is very happy that she can now text with her friends.
Example Output: a

Example Input: Title: Unique tastes. Sentence 1: Mary was a baker and loved making pies to sell. Sentence 2: She would make a new flavor of pie each day for people to try. Sentence 3: Today, she was trying a very unique flavor of banana and cherry. Sentence 4: The pie was a complete hit, and people urged her to make it again. Choices: a. Connor's friends thank him and he feels good for the favor he did. b. Mary decided she would make the pie a regular item in her bakery.
Example Output:
b