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: Tree. Sentence 1: Carl was tasked with finding his family's Christmas tree. Sentence 2: He was fifteen and he felt very manly and important. Sentence 3: But after a night of searching, no tree seemed perfect enough. Sentence 4: He went and bought an artificial tree at the store. Choices: a. Carl's family loved his fake tree just as much as any real tree! b. Glen decided she wasn't so bad afterall.
Example Output: b

Example Input: Title: Fixed. Sentence 1: Kia had just paid a mechanic to fix her car. Sentence 2: But the next day, it had problems again! Sentence 3: She took it back to the mechanic. Sentence 4: He fixed the mistake again, for free this time. Choices: a. Afterwards, the problem was finally resolved. b. Heckles was the perfect clown name for Henry.
Example Output: b

Example Input: Title: Lisbeth. Sentence 1: Lisbeth turn around and smiled. Sentence 2: When she heard someone so willing to help her, she was happy. Sentence 3: In her old age, she'd often wondered if society wasn't getting worse. Sentence 4: Thankfully a young man stopped to help her in the supermarket. Choices: a. He also stole her wallet. b. Sally is now creating new flavors.
Example Output:
b