About: http://webisa.webdatacommons.org/229970111

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 mask may define an area to be treated including, but not limited to, the shape of an ???X???, ???I???, ???H???, ???U??? or an enclosed shape such as a circle or rectangle.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com