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: Sunset Cruise. Sentence 1: Tim and his wife were excited. Sentence 2: They had hired a sailboat for the day and were going to sail. Sentence 3: They had timed it so they would be sailing with the setting sun. Sentence 4: Tim and his wife stood on the bow of the boat and looked on. Choices: a. The sunset was beautiful and they were happy. b. Jack was extremely disappointed.

Ex Output:
a

Ex Input:
Title: Road Trip. Sentence 1: Amy was going on a trip. Sentence 2: She packed all her bags. Sentence 3: She set her alarm. Sentence 4: She woke up in the next morning ready to go. Choices: a. He had terrible gas! b. Amy took off in her car.

Ex Output:
b

Ex Input:
Title: Power Outage. Sentence 1: Paul woke up very late. Sentence 2: And he realized his alarm clock wasn't working. Sentence 3: There was no power in his house. Sentence 4: And he was 3 hours late for work. Choices: a. It ate it within the first night. b. Paul decided to use his cell phone as an alarm afterwards.

Ex Output:
b