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 does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.

Example Input: Title: Ryan Writes A Letter. Sentence 1: Ryan decides he would like to contact an old friend. Sentence 2: He writes his friend a long letter. Sentence 3: He sends his friend the letter in the mail. Sentence 4: His friend receives it later that week. Choices: a. Ryan is happy he contacted his friend. b. Carlos was happy that he had spent the day on the water.
Example Output: b

Example Input: Title: Broken Parachute. Sentence 1: Maurice went skydiving with some buddies. Sentence 2: He flew through the air and felt exhilarated. Sentence 3: He then attempted to deploy the parachute. Sentence 4: It wouldn't open and Maurice started to flip out. Choices: a. His friend grabbed him firmly and deployed his own parachute. b. Martin swept up the glass off the garage floor.
Example Output: b

Example Input: Title: Trigger the Cat. Sentence 1: Trigger's owner couldn't get settled. Sentence 2: Trigger got left with a friend for two months. Sentence 3: Trigger missed his owner a lot. Sentence 4: His owner moved into a house. Choices: a. Trigger is now a happy cat. b. I could not go as I have trouble climbing steps.
Example Output:
b