About: http://webisa.webdatacommons.org/14054797

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	They are only economically feasible because the underlying subsystems (i.e. the things they need, such as power) became more industrialised.
http://www.w3.org/ns/prov#wasQuotedFrom	gardeviance.org