About: http://webisa.webdatacommons.org/449982177

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	Briefly, a layer is a container which can be used, for example, to group HTML document elements, specify the X-Y pixel position of the group and its layering, or stacking order.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com