About: http://webisa.webdatacommons.org/173371288

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	Where polarity or phasing is an issue, both types will also include a key feature that ensures the plug is always inserted in the correct orientation to the socket pins.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com