Definition: 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.
Input: Title: Kurt's Class Reunion. Sentence 1: Kurt graduated from law school ten years ago. Sentence 2: His school held a ten-year class reunion. Sentence 3: At the reunion, Kurt bragged about how many Twitter followers he had. Sentence 4: The other attorneys at the reunion laughed behind his back. Choices: a. Kurt did not realize how shallow and stupid he looked at the reunion. b. I carefully lifted the trapdoor with a long stick and it escaped.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
b