About: http://webisa.webdatacommons.org/121714578

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	Prior to this accepted standard, pianos and other musical instruments had no single common pitch for tuning.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com