<https://rcei.rutgers.edu/event/webinar-down-to-earth-soil-management-with-bill-errickson-rutgers-university/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://rcei.rutgers.edu/event/webinar-down-to-earth-soil-management-with-bill-errickson-rutgers-university/>