About: http://webisa.webdatacommons.org/325150220

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	To grip and reduce scratching the desktop, the revolving member(s) that touch the desktop are optionally coated or are made of a solid material, such as rubber.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com