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: Spider. Sentence 1: Jessica and Tom were happily married. Sentence 2: One day Jessica saw a spider in their home. Sentence 3: She became very upset. Sentence 4: Tom killed the spider. Choices: a. Jessica became very happy that Tom killed the spider. b. But he managed to ace the exam!

Ex Output:
a

Ex Input:
Title: Moldy bread. Sentence 1: I wanted a sandwich this morning. Sentence 2: I went into the pantry to get the bread. Sentence 3: Unfortunately the bread had mold on it. Sentence 4: I was horrified. Choices: a. I immediately threw it away. b. I did not want to go back there.

Ex Output:
a

Ex Input:
Title: Written Exam. Sentence 1: Hoodie's general education class had a big exam coming up. Sentence 2: The professor told everyone to bring a formal exam paper. Sentence 3: Hodie bought a bubble sheet from a nearby shop. Sentence 4: On the day of the test Hodie realized it was a written exam. Choices: a. He bought the wrong paper and had to write his exam in its margins. b. Kai loved spending time in nature.

Ex Output:
a