About: http://webisa.webdatacommons.org/397387206

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	The system uses a digital communications network and a global positioning system to monitor a train???s speed, location and other factors.
http://www.w3.org/ns/prov#wasQuotedFrom	ajot.com