Remember, computers are REALLY stupid. This has to be an EXACT match to score. Sigh . . .
You can try, at first, using the database this calls from, which of course will not be available on the final.
You can also 'View Source' and read the code to get the answer. A.K.A. The last resort, go back to square one approach.
Lastly, before you begin, every time you press reload for the page, you will get a different randomly selected set of ten images to identify.