<https://www.studiobia.eu/2020/04/07/come-cambia-il-mondo-dei-droni-con-il-covid19/#article>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.studiobia.eu/2020/04/07/come-cambia-il-mondo-dei-droni-con-il-covid19/>