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: Better Grades. Sentence 1: The brothers took an acting class. Sentence 2: They worked on everything together. Sentence 3: They thought they would get the same grade. Sentence 4: One of the brothers got a better grade than the other. Choices: a. The one with the better grade teased his brother. b. Zach reminded him that it was birthday paper for Jesus.

Output: a

Input: Consider Input: Title: All About a Boy. Sentence 1: Rachael and Kristy were best friends. Sentence 2: Rachael was dating a boy named Mark. Sentence 3: Mark broke up with Rachel for no reason. Sentence 4: The next week Mark and Kristy started dating. Choices: a. Impatient Agnes ended up waiting much longer than ten minutes. b. Rachael and Kristy are no longer best friends.

Output: b

Input: Consider Input: Title: Student's Nightmare. Sentence 1: Lily sat at her seat in Chemistry class. Sentence 2: She pulled out her book and notebook for class. Sentence 3: Her teacher asked for everyone to pass their homework forward. Sentence 4: Lily's stomach sank. Choices: a. Now the Pirya and the kitten have each other. b. She forgot there was homework last night.
Output: b