[Now, Yuuki might not be able to give Art an actual answer as to what exactly is going on... but a certain lady who is observing the proceedings of the "Hunt" with mild interest (moreso, perhaps, because of the one organizing it than in any real interest to the capabilities of those participating) certainly can.]
It's Sherlock. He's decided to... test his students with this small task, to find certain items around the islands. Quite a bit more innovative than a normal exam, wouldn't you say?