You will be given a definition of a task first, then some input of the task.
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.

Title: Too Much Cheese. Sentence 1: Ahna liked to eat cheese. Sentence 2: She asked her mother to buy a block of cheese. Sentence 3: Ahna ate all the cheese in two days. Sentence 4: Ahna started to get stomach pains. Choices: a. The restaurant magazine wrote a good article on John's restaurant. b. Ahna's mother warned her never to eat that much cheese at once.
Output:
a