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.

Ex Input:
Title: Bad Gifts. Sentence 1: Tom was a bad gift giver. Sentence 2: He wanted to change that. Sentence 3: It was his girlfriend's birthday and he wanted to get something good. Sentence 4: He asked all her friends and family for help. Choices: a. They were able to guide him toward the best choice. b. James loved the match and even joined in some of the chants!

Ex Output:
b

Ex Input:
Title: The river. Sentence 1: Kelly went boating on the wild river. Sentence 2: She forgot to take her favorite glasses off before boarding the boat! Sentence 3: Halfway down the river she hit a rough patch and the boat was shaken. Sentence 4: Her favorite glasses fell from her head into the deep, wild water. Choices: a. She learned her lesson, to never wear glasses while boating again! b. There was no rat, only a hairy, rotten potato.

Ex Output:
b

Ex Input:
Title: Mail. Sentence 1: The man got a letter. Sentence 2: He opened it up. Sentence 3: It was intended for someone else. Sentence 4: He read the contents anyway. Choices: a. He gossiped about the contents around town. b. The next fall, both Sam and Alexis made the team.

Ex Output:
b