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: The Railing. Sentence 1: The family lived on the second level. Sentence 2: The stairs had a wobbly railing attached to them. Sentence 3: The family begged their landlord to replace it. Sentence 4: He always refused. Choices: a. She loved the cup, nonetheless. b. The parents warned the kids about how unsafe it was.

Ex Output:
b

Ex Input:
Title: Lawrence Breaks down. Sentence 1: Lawrence was driving down the road. Sentence 2: He notices a small noise coming from his car hood. Sentence 3: He pulls over to check out the problem. Sentence 4: He pops the hood and smoke fly's everywhere. Choices: a. He calls a tow truck and waits for help. b. The next day he wakes up and checks his ticket and won!

Ex Output:
a

Ex Input:
Title: Safe Car. Sentence 1: The wife picked a car for her husband. Sentence 2: She bought the safest car she could find. Sentence 3: Her husband was in an accident. Sentence 4: The car saved the husband's life. Choices: a. Caleb fell asleep watching the movie. b. The couple people became lifelong customers of that car company.

Ex Output:
b