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: Hiking. Sentence 1: Eric was planning to go solo hiking today. Sentence 2: He packed snacks and a lot of water the night before. Sentence 3: In the morning he headed out very early because the drive was long. Sentence 4: He gets there and there was already a ton of people. Choices: a. He ends up meeting a friend there and they hike together. b. I filled it up before I returned it so it would not happen to her too.

Ex Output:
a

Ex Input:
Title: Lack of Movement. Sentence 1: Tim was in a car accident. Sentence 2: He broke his hip and several other bones. Sentence 3: Tim wasn't able to move around a lot. Sentence 4: Tim began to gain weight from lack of exercise. Choices: a. Now none may stand against the stairmaster. b. Tim had to go to physical training to start moving again.

Ex Output:
b

Ex Input:
Title: Stolen Credit Card. Sentence 1: Sam and Pat were on vacation in Jamaica. Sentence 2: Their credit card stopped working mid vacation. Sentence 3: They assumed their card number had been stolen. Sentence 4: The bank told them someone had stolen their card in Jamaica. Choices: a. He grew very quickly, and became a police officer. b. It was them, they forgot to call the bank before leaving the country.

Ex Output:
b