About: http://webisa.webdatacommons.org/442046148

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	Perhaps the fact that they are oval is a reason for some unwanted frequency intermodulations / resonances.
http://www.w3.org/ns/prov#wasQuotedFrom	pianoworld.com