Definition: 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: Baby!. Sentence 1: Bill and Mary were a married couple. Sentence 2: They really wanted kids but were unable to conceive. Sentence 3: This pained Bill and Mary quite a lot. Sentence 4: One day Bill came home and Mary was smiling and beaming. Choices: a. She told Bill that she was finally and undeniably pregnant! b. The man got a good grade on the paper.
Output:
b