<http://schema.org/thumbnailUrl>
<https://www.imore.com/sites/imore.com/files/styles/thumbnail/public/images/stories/2010/09/ios_42_ipad_game_center_login1.png?itok=nw-OIb3T>
<http://www.imore.com/ios-42-features-game-center-ipad-gallery>