You will be given a definition of a task first, then some input of the task.
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.

Title: Breakup. Sentence 1: Rachel was acting very sad lately and none of us were sure why! Sentence 2: After about a week we finally asked her what was wrong. Sentence 3: She told us that her boyfriend just recently broke up with her. Sentence 4: All of us were very sad for her. Choices: a. And when Sean presented his hand, the penguin tapped the glass. b. After a few more weeks Rachel got over it a bit and wasn't as upset.
Output:
a