About: http://webisa.webdatacommons.org/188618411

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	Your examples of subsystems are all parts of the formal US federal government, for which the subsystems and their functional interfaces are, of course, relatively well-defined.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com