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: Mary's Promotion. Sentence 1: Mary works as a marketing executive at a company downtown. Sentence 2: She's very good at her job. Sentence 3: Her boss noticed how good she's been doing. Sentence 4: Mary was called into her boss's office. Choices: a. Mary was promoted to Marketing Manager! b. His family loved this tradition.
Example Output: a

Example Input: Title: New Shoes. Sentence 1: Cooper envied his friend's new shoes. Sentence 2: He asked his mom for new shoes as well. Sentence 3: She told him no because they were too poor. Sentence 4: Cooper went next door to the old woman's house. Choices: a. Tom was thoroughly embarrassed about the private ones. b. He took some cash from her purse when she wasn't looking.
Example Output: b

Example Input: Title: A New Game. Sentence 1: Kate had given her nephew a new Xbox 360. Sentence 2: She decided to purchase a new game for him as well. Sentence 3: But she wasn't sure what he would like. Sentence 4: Finally a friend suggested a game for pre-teens. Choices: a. Kate was sure he would love the new game. b. Joey jumped in and did a fantastic cannonball.
Example Output:
a