| http://www.w3.org/ns/prov#value | - You can choose from three types of difficulty: Easy, medium and hard, and select cities around the world, or just in your country (The country and language is detected automatically from your smartphone).If your city is not in the game, you can take a picture directly from this app, and upload to our servers, and after being reviewed, your image will become part of the game and other players will
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