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: Merry Go Round. Sentence 1: Sally could not decide between the white horse and pink bunny. Sentence 2: Choosing the right animal on the merry go round was serious business. Sentence 3: She finally decided on the pink bunny. Sentence 4: Her grandmother realized she wanted to ride the horse as much. Choices: a. They took lots of pictures of the animals. b. So she got her a ticket for a second ride.

Ex Output:
b

Ex Input:
Title: Rhonda Buys New Shoes. Sentence 1: Rhonda notices that her work shoes are getting worn out. Sentence 2: She decides to buy a new pair. Sentence 3: Rhonda buys a wonderful pair of shoes for work. Sentence 4: Many co workers complement her new shoes. Choices: a. She is happy that she finally clipped her toenails. b. She is happy that her work shoes are no longer worn out.

Ex Output:
b

Ex Input:
Title: Overprocessed. Sentence 1: Enid put some bleach on her hair to get some blond streaks. Sentence 2: She set the timer for five minutes and sat down. Sentence 3: Nearly an hour later she woke up! Sentence 4: She quickly washed the bleach out of her hair but it was too late. Choices: a. She had snowy white streaks all over her head. b. And Mark himself was thrilled to talk about space- all day, every day!

Ex Output:
a