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.

Example Input: Title: Mistaken Identity. Sentence 1: Joe was walking down the street minding his own business. Sentence 2: All of a sudden a police officer was grabbing him. Sentence 3: The officer said he matched the description of a bank robber! Sentence 4: Joe knew it was a mistake but was still afraid. Choices: a. Fortunately he had an alibi for the time of the crime so was let go. b. It was just a big truck driving by!
Example Output: b

Example Input: Title: Trip to Australia. Sentence 1: Kelley wanted to go away. Sentence 2: She thought about going to Australia. Sentence 3: She brought along some friends. Sentence 4: On the plane ride there she met someone. Choices: a. I sat at my desk and continued to worry. b. They ended up getting together.
Example Output: a

Example Input: Title: Wardrobe. Sentence 1: Lewis and Lucy were playing hide and go seek. Sentence 2: Lucy's favorite hiding spot was an old oak wardrobe. Sentence 3: There were so many clothes it was easy to stay hidden. Sentence 4: Lewis kept calling Lucy's name, but she wouldn't fall for that. Choices: a. Everyone ended up being really nice. b. Once again, Lucy won the game.
Example Output:
a