Instructions: 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: walking. Sentence 1: Christie wanted to go for a walk. Sentence 2: She put on her walking shoes. Sentence 3: Then, she grabbed her bag. Sentence 4: Christie went out her front door. Choices: a. Anna ate her eggs while sitting down. b. Then, she locked the door.
Output:
a