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: Stories. Sentence 1: Laura was telling stories around the campfire. Sentence 2: During the campfire her friends were getting scared. Sentence 3: She wasn't very scared since they were her own stories. Sentence 4: Laura thought it was very funny that they were getting scared. Choices: a. After a while there was a noise and Laura got really scared too! b. After that happened he no longer allowed sleeping in his class!

Ex Output:
a

Ex Input:
Title: The Lost Ticket. Sentence 1: George was supposed to ride a ferry one day. Sentence 2: When he went to board he noticed his ticket was missing. Sentence 3: He searched everywhere for the ticket. Sentence 4: Before long, the ferry had left without him. Choices: a. Luckily he was able to replace his ticket and catch a later ferry. b. It was great to keep memories around the house.

Ex Output:
a

Ex Input:
Title: Bus 2. Sentence 1: The bus took off slowly. Sentence 2: The driver was very old. Sentence 3: She wondered if they would make it on time. Sentence 4: He took turns very slowly. Choices: a. We kept making them anyway. b. He got there ten minutes late.

Ex Output:
b