About: http://webisa.webdatacommons.org/330003276

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	In Marx???s day, the pre-requisite for socially developed labour were the big factories and materials such as steel and coal which were used in the productive process.
http://www.w3.org/ns/prov#wasQuotedFrom	marxists.org