About: http://webisa.webdatacommons.org/242931129

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	After sending a command, the interrogator 47 sends a continuous unmodulated RF signal with a specified frequency, such as 2.44 GHz, 915 MHz, or other frequencies.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr