You will be given a definition of a task first, then some input of the task.
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'.

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.
Output:
b