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: Time To Read. Sentence 1: Kim brought a book with her to read on the train. Sentence 2: She really got into it and the ride passed quickly. Sentence 3: There was a transfer stop along the way. Sentence 4: When Kim changed trains she forgot her book. Choices: a. Alison was skeptical at first but now considers herself a Texan. b. She spent the rest of the trip just looking out the window.
Output:
a