<https://tracklab.com.au/products/brands/optitrack/optitrack-flex-cameras/optitrack-flex-13/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://tracklab.com.au/products/brands/optitrack/optitrack-flex-cameras/optitrack-flex-13/>