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: The Dog. Sentence 1: Liam loved animals. Sentence 2: A dog in the neighborhood was his favorite. Sentence 3: He would pet him every time he walked home from school. Sentence 4: One day, the dog was gone. Choices: a. All those messages from the last few days would take time to answer! b. Liam worried something had happened to him.
Output:
a