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: Rap Battle. Sentence 1: One day some kids at school decided to have a rap battle. Sentence 2: Alec and Ron faced off. Sentence 3: People voted for who they thought should win. Sentence 4: Everyone voted for Alec. Choices: a. Alec won the battle. b. So she decided to eat just butter despite her weight.

Ex Output:
b

Ex Input:
Title: Mistaken Identity. Sentence 1: Joe was walking down the street minding his own business. Sentence 2: All of a sudden a police officer was grabbing him. Sentence 3: The officer said he matched the description of a bank robber! Sentence 4: Joe knew it was a mistake but was still afraid. Choices: a. Fortunately he had an alibi for the time of the crime so was let go. b. It was just a big truck driving by!

Ex Output:
b

Ex Input:
Title: Basketball. Sentence 1: John wanted to play basketball. Sentence 2: He had been practicing for a while. Sentence 3: He was nervous about trying out for the team. Sentence 4: When tryouts arrived he was ready. Choices: a. John was excited when he made the team. b. She grabbed her running shoes and got on with her life.

Ex Output:
b