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 seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Ex Input:
Title: Popcorn. Sentence 1: Kate and her niece and nephew were watching TV. Sentence 2: Her niece wanted popcorn to go with the TV. Sentence 3: But there was no microwave popcorn in the house. Sentence 4: Kate remember they had a jar of popcorn in the Kitchen. Choices: a. She was sure she would never see him again. b. She decided she would indeed make popcorn for the kids.

Ex Output:
b

Ex Input:
Title: Mexican Gas Station. Sentence 1: We used to always see signs for a Mexican restaurant. Sentence 2: It was located inside a gas station so we were a bit confused. Sentence 3: But it received amazing YELP reviews online. Sentence 4: So one day we decided to try it. Choices: a. But he lost and seems to still have much to learn about poker. b. And oh my was it an amazing Mexican experience!

Ex Output:
b

Ex Input:
Title: Jessica and the math tutor. Sentence 1: Jessica always lacked confidence in her math skills. Sentence 2: She struggled with fractions a lot. Sentence 3: Then Jessica started getting help from a math tutor. Sentence 4: The tutor explained fractions to her a way she'd never heard before. Choices: a. Now Jessica has a grasp on fractions and is more confident in math. b. The man in the bed had a broken leg.

Ex Output:
a