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: Mouse Trap. Sentence 1: Tom noticed he had mice. Sentence 2: There were small poops and traces of it everywhere. Sentence 3: Tom decided to get some humane mouse traps. Sentence 4: They were quite effective. Choices: a. Tina was annoyed and went home. b. Tom was able to get rid of the mice in no time.

Ex Output:
b

Ex Input:
Title: Picking a Birthday Card. Sentence 1: Vanessa was shopping for birthday cards. Sentence 2: Nothing was quite right though. Sentence 3: She agonized over her choice, but nothing stood out. Sentence 4: Suddenly, she noticed a sparkly blue card tucked in a corner. Choices: a. Barb decided to run and grab a burger for lunch. b. She had found the perfect card for her sister!

Ex Output:
b

Ex Input:
Title: Buffet Binge. Sentence 1: Ted was at a Chinese buffet. Sentence 2: And he spent half an hour trying to decide what to eat. Sentence 3: He became very anxious and put tons of different food on his plate. Sentence 4: And he felt obligated to quickly finish it all. Choices: a. Ted went to a therapist later to get help with his anxiety. b. He gave him a minor compliment.

Ex Output:
a