About: http://webisa.webdatacommons.org/45039022

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	For Marx, productive forces refer to the means of production such as the tools, instruments, technology, land, raw materials, and human knowledge and abilities in terms of using these means of production.
http://www.w3.org/ns/prov#wasQuotedFrom	reference.com