According to Google, “What is the EU?” is the second most searched term about the EU since the announcement of the historic Brexit referendum this morning. Oh, and in the hours prior to the vote, Google says one of the top questions was “What is Brexit?”

These and other findings can be found in a report about the EU referendum posted on Google Trends.

"What is the EU?" is the second top UK question on the EU since the #EURefResults were officially announced pic.twitter.com/1q4VAX3qcm

— GoogleTrends (@GoogleTrends) June 24, 2016

This ignorance will likely cause further dismay to the millions in Britain who are understandably concerned about the massive uncertainty created by Thursday’s vote. And it also led to the predictable snark on Twitter.

Would've been wise to google those questions BEFORE hitting the self-destruction button, wouldn't it, Britain? :D https://t.co/HJCHZo5IV0

— Thomas Mollen (@tommollen) June 24, 2016

If you want a silver lining, it appears those who do understand what the EU is are already grasping the implications:

The report also contains other interesting nuggets such as which countries showed the highest interest in the vote. Britain was at the top, obviously, followed by Singapore, Luxembourg, and Ireland.

The report also shows particular concerns of other EU countries. In Poland, for instance, the third most popular query is, “How would a Brexit affect Poles in the UK?” while Spaniards second most common question is, “How would Gibraltar be affected by Brexit?”

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The Google Trends report also shows a high level of interest in how the referendum will affect the UK’s national health service, the NHS, and about the impending resignation of Prime Minister David Cameron.

Obviously, Google users—and everyone else — are only beginning to digest just what took place this week.

You can read more Fortune coverage to learn about this historical event, what will happen next, and how the tech sector will be affected by Brexit.