<http://schema.org/thumbnailUrl>
<https://www.androidcentral.com/sites/androidcentral.com/files/styles/thumbnail/public/article_images/2016/04/amazon-echo-dot-6.jpg?itok=jehOjo07>
<http://www.androidcentral.com/you-can-now-use-your-amazon-echo-add-events-your-calendar>