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: Trip to Mexico. Sentence 1: Suzy and her boyfriend had been together one year. Sentence 2: They decided to celebrate. Sentence 3: They took a trip to Mexico. Sentence 4: They stayed the beach. Choices: a. Unfortunately though they got caught in a hurricane. b. Ed eventually discovered many new treatments for infections.

Ex Output:
b

Ex Input:
Title: Rap Music. Sentence 1: Tim loved listening to rap. Sentence 2: Unfortunately his parents hated it. Sentence 3: He would try to sneak cds. Sentence 4: His parents always found them. Choices: a. They would destroy his music whenever they could. b. Luckily she caught up with another later bus stop.

Ex Output:
b

Ex Input:
Title: The Accident. Sentence 1: Ken was a great tennis player. Sentence 2: He was quickly rising in the ranks. Sentence 3: One day he was training extra hard. Sentence 4: He tripped and broke his hip. Choices: a. They all danced around with the lights on and music playing. b. He was unable to continue playing.

Ex Output:
a