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.

Example Input: Title: Ballet Class. Sentence 1: One day Gina decided to enroll in a ballet class. Sentence 2: She started having fun the very first day. Sentence 3: She got better as she took more classes. Sentence 4: Eventually she competed in a tournament. Choices: a. She ended up winning! b. But she ended up having a lot of fun!
Example Output: a

Example Input: Title: Nightmare. Sentence 1: Stephanie awoke in the middle of the night to a door slamming. Sentence 2: She became very scared, thinking she had an intruder in her home. Sentence 3: Stephanie grabbed her pepper spray and tiptoed downstairs. Sentence 4: She noticed her back door was ajar and quietly walked over to it. Choices: a. She peered outside and saw her sleepwalking daughter roaming the yard. b. Tim saw his happiness improve significantly.
Example Output: a

Example Input: Title: Cold Night. Sentence 1: Tom was out hiking at night. Sentence 2: It was summer but the night got cold. Sentence 3: Tom didn't realize how cold it got. Sentence 4: His sweat started cooling him down too much. Choices: a. Tom got pneumonia because of it. b. Now Smelly owns a company.
Example Output:
a