About: http://webisa.webdatacommons.org/147516286

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 wedge can be a solid, unyielding material or it can be a resilient material, such as rubber, including a hard rubber.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com