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: Hatchet. Sentence 1: The stranger walked into town with a hatchet on his belt. Sentence 2: He walked straight to the central bank. Sentence 3: The man said nothing as he walked to a teller. Sentence 4: The bank teller asked for his account information. Choices: a. She was two minutes overtime. b. The stranger slammed his hatchet on the table in response.
Example Output: a

Example Input: Title: Don't tease me. Sentence 1: Mark made a grilled cheese sandwich while Ben, his dog, watched. Sentence 2: Knowing that Ben wanted a bite, Mark pretended to give it to Ben . Sentence 3: Barely missing it each time, Ben, frustrated, jump at Mark's face. Sentence 4: Because Ben startled him, Mark dropped the sandwich onto the floor. Choices: a. Ben happily ate the sandwich as Mark watched. b. Johnny was happy with his bargain shopping.
Example Output: b

Example Input: Title: Fight. Sentence 1: Out two year old granddaughter Sheila is in a day care. Sentence 2: Sheila is a very intelligent, but tough child. Sentence 3: One day another child took Sheila's milk. Sentence 4: Sheila hit the child on her head. Choices: a. The mosquitoes bite her much less after taking B1. b. Sheila's teacher had a talk with her about hitting others.
Example Output:
a