<https://safesitecheckin.com/2021/07/16/site-check-in-app-built-for-pandemic-shifting-to-broader-uses/#schema-nav-element-3039>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/SiteNavigationElement>
<https://safesitecheckin.com/2021/07/16/site-check-in-app-built-for-pandemic-shifting-to-broader-uses/>