About: http://webisa.webdatacommons.org/85920484

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	The Yamaha Disklavier piano, used in the study discussed later, is an acoustic instrument equipped with optical laser sensors to measure the mechanical velocity of each key's hammer by registering the speed of its down-stroke.
http://www.w3.org/ns/prov#wasQuotedFrom	questia.com