About: http://webisa.webdatacommons.org/158281648

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In some embodiments, the tracking element is a material that is detectable by an imaging system.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk