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.

Ex Input:
Title: Wi-Fi. Sentence 1: Maggie's internet at home did not work. Sentence 2: She decided to go to the coffee shop and work there. Sentence 3: She was disappointed to find out, coffee shop wifi was also down. Sentence 4: She bought a lunch and coffee there. Choices: a. At least she enjoyed her food. b. With the master's guidance, he landed a career doing swordplay.

Ex Output:
b

Ex Input:
Title: Lost Ball. Sentence 1: Tom was playing kickball with friends. Sentence 2: He accidentally kicked over the wrong fence. Sentence 3: It went into a neighbor's yard. Sentence 4: Tom was forced to get it by his friends. Choices: a. Tommy was given another meal for free and a very sincere apology. b. The neighbor was annoyed.

Ex Output:
a

Ex Input:
Title: Karaoke. Sentence 1: Linda went to a karaoke party. Sentence 2: She had vowed not to sing anything. Sentence 3: But then she heard the other attendees singing. Sentence 4: None were great, but nobody mocked anyone else! Choices: a. Unfortunately he was too shy to do so. b. Finally Linda found the courage to sing her own song!

Ex Output:
a