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: Box of Toys. Sentence 1: My son's box of toys was very full. Sentence 2: We needed another box to keep them in. Sentence 3: We ordered one from the internet. Sentence 4: We waited for it to come. Choices: a. I felt incredibly lonely that day. b. It finally came in the mail.
Output:
a