About: http://webisa.webdatacommons.org/255412629

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	We can either do so by ear or with an oscilloscope or other measuring device that can show us the plot.
http://www.w3.org/ns/prov#wasQuotedFrom	cnccookbook.com