You can look up every building in the wiki.Contest #2...age-ist much? I'm in CA in beta and at least one of those is OA. Why didn't you go with event buildings or GB's?
Just like you can google every crosswords puzzle, the point is it's not accessible across the ages like GB are. Anyone under AF isn't going to know what even to look for on the wiki for the OA terminal because it's a new feature for those ages. The fun is doing it from your own knowledge like #3 the event and past experience helps you know which buildings those are.You can look up every building in the wiki.