About: http://webisa.webdatacommons.org/18860779

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	group other than working people is required to ensure working-class
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com