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: 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!
Example Output: b

Example Input: Title: Beach. Sentence 1: This summer my wife and I went on a vacation to the beach. Sentence 2: It was on Hilton Head and was sunny and nice the whole time. Sentence 3: We had a great spot near the beach and walked it every morning. Sentence 4: We stayed a week and it was the best vacation ever. Choices: a. We are planning on going back soon because it was so awesome. b. However, I was no longer nervous when I saw how nice my teacher was.
Example Output: b

Example Input: Title: Cheap Trash Bag. Sentence 1: Sam was taking out the trash. Sentence 2: On the way there the bag broke. Sentence 3: Trash went everywhere. Sentence 4: Sam took a long time cleaning it back up. Choices: a. Everyone had a great time. b. He decided to buy stronger bags next time.
Example Output:
a