About: http://webisa.webdatacommons.org/120995250

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	It is preferred that the frame is rectangular, in particular square, since this is the most convenient shape for preparation and, since most PCBs (for example) or device substrates are rectangular, this minimises the wasted stencil area.
http://www.w3.org/ns/prov#wasQuotedFrom	sumobrain.com