About: http://webisa.webdatacommons.org/338587763

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 erasable system disclosed in these patents includes a marking element carrying a smooth, hard, virtually impervious marking surface such as a hard, plastic surface.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com