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: Science Project. Sentence 1: Jon had worked very hard at his science project. Sentence 2: Jon brought it to the science fair and set up a booth for all to see. Sentence 3: Jon's project was very popular and received many visitors. Sentence 4: Jon answered many people's questions regarding his amazing project. Choices: a. They called the police right away. b. Jon was very happy to win the blue ribbon for his science project!

Ex Output:
b

Ex Input:
Title: Terrance becomes a pro. Sentence 1: Terrance wants to be a football player. Sentence 2: He tries out for a NFL club. Sentence 3: He gives it everything he has. Sentence 4: He does very well. Choices: a. He is rushed to the hospital to be treated. b. The team offers him a spot on the team.

Ex Output:
b

Ex Input:
Title: Papal Visit. Sentence 1: Cathy is a devout Catholic. Sentence 2: Recently, Cathy learned that the pope will visit the United States. Sentence 3: Cathy vowed that she would try her best to make it to see the Pope. Sentence 4: Cathy felt that this would be the opportunity of her life. Choices: a. Cathy could not wait for the Pope to come to the United States. b. Fireman rushed to the scene and put out the fire abruptly.

Ex Output:
a