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.

Input: Consider Input: Title: Dance Class. Sentence 1: Natalie was going to her first dance class. Sentence 2: She had dreamed about this day for years! Sentence 3: Her teacher invited her to put on her ballet shoes. Sentence 4: Natalie couldn't wait to learn how to dance! Choices: a. She was going to work hard to do a great job in the recital. b. But her boss congratulated her as she had found the quips funny.

Output: a

Input: Consider Input: Title: Up Close. Sentence 1: My grandparents and I were going for a walk. Sentence 2: We were walking near some pine trees and turned a corner. Sentence 3: Suddenly, right in front of us, was a huge moose. Sentence 4: It was so close that it scared us, but they told me not to run. Choices: a. Sarah loved the dinner he cooked for her! b. We all stood still and soon the moose walked away without harm.

Output: b

Input: Consider Input: Title: Big Time Bill. Sentence 1: Bill loved music and making music. Sentence 2: He began uploading videos of himself playing his tunes to YouTube. Sentence 3: Bill began attracting lots of loyal fans. Sentence 4: Bill soon got an email from a record producer. Choices: a. The Yankees won the World Series! b. Now Bill's music is being published by Sony!
Output: b