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.

Example Input: Title: Old Bent Over Woman. Sentence 1: Vince noticed his neighbor bending over her flower garden. Sentence 2: She seemed to be in a lot of pain. Sentence 3: Vince offered to help her do the weeding. Sentence 4: His neighbor was very grateful for his help. Choices: a. She told him at her age weeding was too hard on her back. b. He is now considering starting his own BBQ business.
Example Output: b

Example Input: Title: The Gymnast. Sentence 1: Liv wanted to be an Olympic gymnast. Sentence 2: She trained every day after school. Sentence 3: Unfortunately, she was injured in a car accident. Sentence 4: She had to undertake months of physical therapy to heal her ankle. Choices: a. Eventually, she was back to practicing gymnastics. b. Luckily, the phone was still covered under warranty.
Example Output: b

Example Input: Title: The Tall Boy. Sentence 1: Tony was taller than the rest of his classmates. Sentence 2: They all laughed at him and called him names. Sentence 3: Tony was embarrassed at his height. Sentence 4: When Tony got older he was able to easily play basketball. Choices: a. He was always picked to be on their team. b. She drove her new car off the lot, the title in her hand.
Example Output:
b