About: http://webisa.webdatacommons.org/215173325

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 calibration is for a given strength of signal, which occurs at, e.g., 1/4 inch or other appropriate distance.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr