<https://www.heinitz-gymnasium.de/single-post/2017/09/18/59bfb9acaf7c914fa0cd8cc5>
<http://schema.org/datePublished>
"2017-09-18T12:22:43.768Z"^^<http://schema.org/Date>
<https://www.heinitz-gymnasium.de/single-post/2017/09/18/rtrtr>