About: http://webisa.webdatacommons.org/117495470

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 echo signals are subjected to various types of filtering processing, logarithm amplification, envelope detection processing, or the like, thereby generating data wherein the signal intensity is indicated with the luminance.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com