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: Katie Courier. Sentence 1: Katie was asked by a stranger to deliver a package. Sentence 2: She unwisely took the package of unknown contents. Sentence 3: While delivering the package it tore open. Sentence 4: Some of the toxic substance in it leaked out. Choices: a. Tim had less tickets than any of his friends. b. She became very ill at the exposure to the contents.

Ex Output:
a

Ex Input:
Title: Eve's Article. Sentence 1: Eve was writing an article for the school paper. Sentence 2: The editor didn't like Eve's article. Sentence 3: The editor told Eve to write a new article. Sentence 4: Eve wrote a new article. Choices: a. She submitted it to the editor. b. Brad is finally picked and he is relieved.

Ex Output:
b

Ex Input:
Title: Breakup. Sentence 1: Rachel was acting very sad lately and none of us were sure why! Sentence 2: After about a week we finally asked her what was wrong. Sentence 3: She told us that her boyfriend just recently broke up with her. Sentence 4: All of us were very sad for her. Choices: a. And when Sean presented his hand, the penguin tapped the glass. b. After a few more weeks Rachel got over it a bit and wasn't as upset.

Ex Output:
a