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: travel master. Sentence 1: Sam found out he had cancer. Sentence 2: Sam created a bucket list. Sentence 3: Sam's main priority was to travel the world. Sentence 4: Sam found out his cancer was in remission. Choices: a. Sam canceled many things on his bucket list except to travel. b. John felt like a celebrity.

Ex Output:
b

Ex Input:
Title: New Watch. Sentence 1: Sally wanted to buy something for her hubby. Sentence 2: She went to the department store. Sentence 3: She looked around all over for something. Sentence 4: She saw a really cool watch! Choices: a. Sally bought him the new watch! b. Tom never got ringworm and credited his great hygiene.

Ex Output:
b

Ex Input:
Title: Lost Keys. Sentence 1: Kim was trying to get to work. Sentence 2: She couldn't find her car keys anywhere. Sentence 3: Finally she noticed a sound coming from her dog. Sentence 4: He had been carrying them around the whole time. Choices: a. Kim got the keys and ran out the door. b. Come to find out, Katie had a peanut allergy.

Ex Output:
b