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: Weight Loss Tricks. Sentence 1: Tim wanted to lose weight. Sentence 2: He tried different tricks. Sentence 3: He also tried stuff he heard about on television. Sentence 4: Nothing really worked. Choices: a. He was so loved he won a medal from the Mayor. b. Tim figured he wasn't able to lose weight.
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
a