In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.

Ex Input:
Sentence 1: Sara had a physics exam coming up. Sentence 2: Sara is always nervous about science and math testing. Sentence 3: Sara studied and studied all the physics material. Sentence 4: Sara made sure to get a good night's sleep before the day of the exam. Sentence 5: Sara nailed the physics exam! Choices: a. Exam. b. Zombie Dusk.

Ex Output:
a

Ex Input:
Sentence 1: Sam was out on a hike. Sentence 2: He ran across some wild mushrooms. Sentence 3: He took them with him just in case. Sentence 4: He verified online that they were edible. Sentence 5: He risked it and cooked them into a delicious meal. Choices: a. Wild Mushrooms. b. Snowboarding For the First Time.

Ex Output:
a

Ex Input:
Sentence 1: Ron hadn't lived near a big store for a long time. Sentence 2: The first thing he did was buy a lot of ice cream. Sentence 3: He binged out and ate it all in one sitting. Sentence 4: Ron felt very sick for days after that. Sentence 5: He swore to have more self-discipline no matter how close a store was. Choices: a. Working On Up. b. Binge.

Ex Output:
b