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: Lighter. Sentence 1: Bob wanted to smoke a cigarette. Sentence 2: However, he forgot his lighter. Sentence 3: He went to his friend and asked for one. Sentence 4: His friend said he doesn't have one. Choices: a. It ended up sliding down all the time. b. Bob knows his friend has one however.
[EX A]: b

[EX Q]: Title: Leak. Sentence 1: Jack was rowing in a canoe with his friend Rose. Sentence 2: The sun was shining and the water was calm. Sentence 3: It seemed like the perfect day for a canoe ride. Sentence 4: Suddenly, Jack noticed his shoes were wet. Choices: a. The canoe had sprung a leak. b. Later Jen found her card under her sofa.
[EX A]: a

[EX Q]: Title: Trade. Sentence 1: They were sold out of medium shirts. Sentence 2: All that was left was larges. Sentence 3: My friend wanted to trade with me. Sentence 4: She is smaller than me. Choices: a. My friend came to pick me up. b. So I traded with her.
[EX A]:
b