About: http://webisa.webdatacommons.org/254032634

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	Sometimes I have the feeling that some hammers do not move up as much as they move down when I release the jack again.This is a problem when setting hammer height.
http://www.w3.org/ns/prov#wasQuotedFrom	pianoworld.com