About: http://webisa.webdatacommons.org/178104491

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	Plenty of systems still use DC, most notably the subway, but ConEd has gradually moved the responsibility for AC/DC conversion to the customers, allowing ConEd to stop delivering DC power off the grid.
http://www.w3.org/ns/prov#wasQuotedFrom	flooey.org