About: http://webisa.webdatacommons.org/2501431

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	Positioning systems 24 a and 24 b may be 4-axis positioning systems that include cameras, sensors, or other positioning devices to determine the lateral and vertical position of probes 22 a and 22 b.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr