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: Used book. Sentence 1: Allie needed books for school. Sentence 2: So she looked online. Sentence 3: She found some that were very cheap. Sentence 4: They were used. Choices: a. But when she got them they looked like new. b. Warren went home and had corn for dinner.
Output:
b