About: http://webisa.webdatacommons.org/70057446

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	Likely the fact that they were so low impact on the environment was due to the fact that they were so technologically backwards and therefore lacked the ability to screw up the environment on any sort of scale.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com