About: http://webisa.webdatacommons.org/369475254

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	Although the standard 60 Hz frequency is commonly used by power utilities, other frequencies such as 400 Hz are also used, for example, in civilian and military aircraft.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com