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: Justin's Cats. Sentence 1: Justin always wanted to own a black cat. Sentence 2: He didn't want to adopt one until he settled down. Sentence 3: He saw a beautiful black cat in a pet store one day. Sentence 4: After a lot of thought, he decided to buy it. Choices: a. Now he can't imagine what life would be like without him. b. Abby was mad that she would have to replace the roof on her house.

Ex Output:
b

Ex Input:
Title: App Updates. Sentence 1: Nina needed to access her phone as quickly as possible. Sentence 2: She was about to make an urgent call when something popped up. Sentence 3: Suddenly dozens of apps began updating themselves. Sentence 4: By the time the downloading stopped it was too late. Choices: a. Tony decided to quit his job right then and there. b. Nina had to find a different phone to make her call.

Ex Output:
a

Ex Input:
Title: Hot dogs. Sentence 1: I was in a hot dog cooking contest at a family reunion. Sentence 2: Nobody liked my hot dogs at all. Sentence 3: Everyone liked uncle Jeb's hot dogs. Sentence 4: I asked everyone why no one wanted my hot dogs. Choices: a. The friend apologized for the inconvenience and left. b. It turns out all of Uncle Jeb's hot dogs came with a 5 dollar bill.

Ex Output:
a