About: http://webisa.webdatacommons.org/152108758

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	to a designated one of two numbered layers (0 or 1) of the printed circuit board, silicon wafer, or other substrate.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com