About: http://webisa.webdatacommons.org/248216900

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	At each end, the strings rest on raised bars made of a hard material such as hard plastic or ivory.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com