About: http://webisa.webdatacommons.org/72501845

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 bottom layer is a lower conductive layer, preferably without holes extending through it, and can be made of a metal, for example, such as silver or copper.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com