About: http://webisa.webdatacommons.org/181569168

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	It does not discuss why other systems were excluded, however, such as biology or language.
http://www.w3.org/ns/prov#wasQuotedFrom	btnewberg.com