About: http://webisa.webdatacommons.org/200078299

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	For example, modulation of MMW radiation produced by fluorescent lights 405, 407 can be substantially sinusoidal having a frequency of associated with the power line frequency, e.g. 60 Hz.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com