About: http://webisa.webdatacommons.org/71966182

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	The principle of copyleft has gone on to create new categories of commonly shared knowledge ??? and has become an important tool, particularly on the internet.
http://www.w3.org/ns/prov#wasQuotedFrom	schnews.org.uk