About: http://webisa.webdatacommons.org/271386837

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	FIG. 2a is a diagram showing a cross-sectional lateral view of a valve box lid and the magnetic flux produced by eddy currents generated by an interrogating device in accordance with this invention;
http://www.w3.org/ns/prov#wasQuotedFrom	google.com