About: http://webisa.webdatacommons.org/132316758

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	When playing a piano, this 50 gram weight is a small fraction of the force required to play -- most of the force is used to produce the sound.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com