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 Concert. Sentence 1: Robyn's favorite singer of all time is Celine Dion. Sentence 2: One day, her wife surprised her with tickets to a Celine concert. Sentence 3: The night before the concert, she was so excited, she couldn't sleep. Sentence 4: They had great seats and were on their feet much of the concert. Choices: a. Robyn had the time of her life and can't wait to see her again! b. He was asked to become a football coach and he took the job!

Ex Output:
a

Ex Input:
Title: Rain. Sentence 1: Regina loves the rain. Sentence 2: She decided to finish her book while it rained today. Sentence 3: Regina managed to finish five chapters. Sentence 4: But the rain was so soothing that she fell asleep. Choices: a. Although she didn't finish her book, she was happy with her nice nap. b. He heads to Atlanta to have fun and sin.

Ex Output:
a

Ex Input:
Title: The Old Days. Sentence 1: Marie was a painter when she was younger. Sentence 2: Now she was old and worked as a telemarketer. Sentence 3: One day, she told a young coworker about her old artistic days. Sentence 4: It made her melancholy to remember when she'd painted. Choices: a. She dreamed that night she was a famous painter. b. After Ace lost, and the stranger left, Ace realized he'd been hustled.

Ex Output:
a