About: http://webisa.webdatacommons.org/37265913

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	main source of conversion between main alternating current and the direct current used by computers and other electronic devices.
http://www.w3.org/ns/prov#wasQuotedFrom	sec.gov