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: Broken Down. Sentence 1: Tim was on a road trip. Sentence 2: The van broke down halfway through. Sentence 3: The price to fix it was more than Tim could afford. Sentence 4: He decided to stay locally and get a job. Choices: a. He never moved back out. b. I even bent down and picked it up, thinking it was cute.

Ex Output:
b

Ex Input:
Title: River Accident. Sentence 1: Tim was playing with other kids. Sentence 2: They were by the river. Sentence 3: Someone dared Tim to jump in. Sentence 4: He didn't want to but did anyway. Choices: a. When done, Sally looked into the mirror and knew she looked amazing. b. Tim was swept away.

Ex Output:
a

Ex Input:
Title: New Computer. Sentence 1: Jay had the same computer for a while. Sentence 2: He started doing some research on building computers. Sentence 3: He bought the part online. Sentence 4: Once he got the part he started to assemble his own computer. Choices: a. But a few weeks later, he was hospitalized for a disease. b. His new computer is much faster than the old one.

Ex Output:
a