<http://schema.org/keywords>
"patent, Apple, iPhone, future, Home Button, thinkapple.sk, home, button, liquid, tekut\u00FD kov, tekut\u00FD, kov"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.thinkapple.sk/2016/03/12/apple-si-patentoval-home-button-z-futuristickeho-materialu/>