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 Q]: Title: Gonna Fly Away. Sentence 1: Bob decided to fly out to North Dakota to look at houses. Sentence 2: He booked a flight on an airline he'd never flown with before. Sentence 3: After a long delay the plane finally took off. Sentence 4: Bob was distracted thinking about houses and didn't notice the smoke. Choices: a. Soon Cora was feeling better. b. The plane's engines caught on fire and it crashed, killing everyone.
[EX A]: b

[EX Q]: Title: Chemistry. Sentence 1: My niece has two kids, 12 and 9. Sentence 2: They are both withdrawn and aloof. Sentence 3: Last weekend our two-year old granddaughter Sara visited from NY. Sentence 4: Sara loved the two kids and played with them. Choices: a. The teacher told her she is not ready for this difficult piece yet. b. They were very friendly to her as well, which was a surprise.
[EX A]: b

[EX Q]: Title: The Hiking Trip. Sentence 1: The family went on a trip together. Sentence 2: They were going to hike part of the Appalachian Trail. Sentence 3: They packed their bags and started hiking. Sentence 4: They made it almost twenty miles in one day! Choices: a. They ended the series as the champions! b. Their legs were tired but they had a great time.
[EX A]:
b