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: Pink Highlighter. Sentence 1: Jane always took notes with a pink highlighter. Sentence 2: Other students found it quirky but unremarkable. Sentence 3: They primarily took notes in pen or pencil. Sentence 4: On the day of an open-note exam, the room was dark. Choices: a. Olaf was satisfied with his work overall. b. Jane could not read her notes in the lighting and became teary.

Ex Output:
b

Ex Input:
Title: Going to Ma's House. Sentence 1: Her grandmother was finally here to pick her up. Sentence 2: Tina burst through the front door before Ma even got out the car. Sentence 3: Tina ran to her grandmother and gave her a big hug. Sentence 4: To her dismay, Tina had to wait because Me went inside. Choices: a. She went to her own bedroom to prepare for bed. b. After an hour of hellos Tina and Ma finally left for their sleepover.

Ex Output:
b

Ex Input:
Title: Buying a Dog. Sentence 1: Craig was very lonely. Sentence 2: All his friends told him that he should get married. Sentence 3: They didn't realize that Craig was homosexual. Sentence 4: Craig had the misfortune to live in intolerant times. Choices: a. Tod finally stopped procrastinating and clean it. b. So Craig bought a dog instead, and eventually died alone.

Ex Output:
b