<https://techinvestor.online/2020/10/30/iphones-can-now-tell-blind-users-where-and-how-far-away-people-are/#Breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://techinvestor.online/2020/10/30/iphones-can-now-tell-blind-users-where-and-how-far-away-people-are/>