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: The Flu Shot. Sentence 1: The woman didn't want to catch the flu. Sentence 2: She got a flu shot from her doctor. Sentence 3: She hoped it would keep her healthy all winter. Sentence 4: In January, her body started aching. Choices: a. She had caught the flu anyway! b. Then Charles realized he'd forgotten his gun!

Ex Output:
b

Ex Input:
Title: The Snack. Sentence 1: Sara was starving. Sentence 2: She went to the kitchen for a snack. Sentence 3: She got some crackers and cheese. Sentence 4: She ate everything on the plate. Choices: a. Sara was able to finish the race and beat a record. b. Now she had the energy to tackle her day!

Ex Output:
a

Ex Input:
Title: Not what expected. Sentence 1: Suzy bought some calls in a stock. Sentence 2: She thought it would go higher. Sentence 3: But contrary to her belief the stock tanked. Sentence 4: Suzy was horrified. Choices: a. She put her jeans in the dryer. b. She lost all her money.

Ex Output:
a