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: Ryan wins the award. Sentence 1: Ryan is a tv actor. Sentence 2: He is nominated for an award. Sentence 3: He arrives at the award show. Sentence 4: He wins the award at the show. Choices: a. His mother found the watch inside his backpack. b. Ryan goes home with his award.

Ex Output:
a

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: Movie night. Sentence 1: Sara invited her friend over to watch a movie. Sentence 2: They decided to watch a horror movie. Sentence 3: The girls curled up on the sofa. Sentence 4: The DVD would not play. Choices: a. Sam said his car keys were in the cooler. b. They decided to play cards instead.

Ex Output:
a