About: http://webisa.webdatacommons.org/4200221

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	Sample is a sine wave, known frequency, so I can check), but the numbers are a bit odd, and my maths-foo is weak.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com