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: Consider Input: Title: Mail Story. Sentence 1: Lori moved into a new neighborhood. Sentence 2: One day her mailman put someone else's mail in her mailbox. Sentence 3: Lori took the mail to the correct address. Sentence 4: The woman at that address was rude to Lori. Choices: a. He never found out who drank it. b. Lori decided that she did not want to be friends with this woman.

Output: a

Input: Consider Input: Title: Missed Class. Sentence 1: One day, I was late for class. Sentence 2: I had forgotten the teacher said to meet in the library that day. Sentence 3: I went to class, and sat there for half an hour alone. Sentence 4: The teacher finally sent my best friend to find me. Choices: a. She said the teacher was laughing at me, so I was relieved. b. He got his ball and also managed to get a date with her.

Output: b

Input: Consider Input: Title: Prison. Sentence 1: Oswald made a plan to escape from prison. Sentence 2: He told his cellmate the plan. Sentence 3: His cellmate agreed to help. Sentence 4: One morning the guards searched his cell. Choices: a. Oswald's cellmate had turned him in. b. Alex went on to achieve.
Output: b