About: http://webisa.webdatacommons.org/52246535

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 base cushion 504 is provided to afford a soft surface upon which to rest a book or other document, in accordance with one embodiment of the invention.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com