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: Family. Sentence 1: Sarah's mom was visiting from Florida. Sentence 2: They went to Sarah's favorite restaurant. Sentence 3: They talked for hours without realizing the time. Sentence 4: They had talked passed closing time! Choices: a. Sarah tipped the waitress generously. b. They were both better off for the storm coming in.

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: Lightbulb. Sentence 1: Our lamp seemed dim the other night. Sentence 2: My wife took a new bulb out. Sentence 3: She dropped the bulb and it shattered. Sentence 4: She got a vacuum cleaner and ran it over the carpet. Choices: a. Dwayne decided to spend the money doing things she would approve of. b. Luckily the vacuum cleaner was powerful and got the pieces.

Ex Output:
b