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: Love Gives Strength. Sentence 1: Michelle knew she wasn't going to win the track championship. Sentence 2: She'd made it to the finals, but she knew she wouldn't beat the star. Sentence 3: Michelle got in her starting block in her lane. Sentence 4: The supposedly fastest girl in track right next to her. Choices: a. He was trying to hide its brand, but gave up the habit after that. b. Michelle's mother cheered so loud Michelle pushed and won the race.

Ex Output:
b

Ex Input:
Title: Dino Man. Sentence 1: Bill was curious as a kid about the great dinosaurs. Sentence 2: Bill read every book about dinosaurs that he could find. Sentence 3: Bill went on to study dinosaurs in highschool and college. Sentence 4: Bill went into graduate studies in paleontology and biology. Choices: a. Now Bill is the world's leading authority on dinosaurs! b. For the next game, the boys split up more evenly.

Ex Output:
a

Ex Input:
Title: Mix Tapes. Sentence 1: I found some old mix tapes. Sentence 2: These mix tapes were created by my parents. Sentence 3: I started to listen to it. Sentence 4: Some of the music is okay, but most of it was bad. Choices: a. I did find it funny however knowing what music my parents like. b. I never went back to Fenway Park.

Ex Output:
a