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: Jill loved butter. Sentence 2: But she noticed that she was gaining weight. Sentence 3: So she made efforts to use less butter when she cooked. Sentence 4: But she couldn't resist it. Sentence 5: So she decided to eat just butter despite her weight. Choices: a. Buttery. b. New Wallpaper.

Ex Output:
a

Ex Input:
Sentence 1: I woke up one morning after having terrible nightmares. Sentence 2: I didn't want to even get out of bed. Sentence 3: I was also afraid to go back to sleep. Sentence 4: I finally got up, thinking the day would be better. Sentence 5: Everything went wrong all day. Choices: a. Life. b. Ken loses his money.

Ex Output:
a

Ex Input:
Sentence 1: Wallace was working with his team for his college chemistry lab. Sentence 2: They needed to create a solution using a certain amount of chemicals. Sentence 3: Wallace and his team carefully read the instructions. Sentence 4: Unfortunately, one of the team members wasn't fully paying attention. Sentence 5: Their solution started pouring out, making a mess of their work table. Choices: a. Susie's Intense Summer. b. Chemistry.

Ex Output:
b