<http://webisa.webdatacommons.org/prov/51798858> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/181675871> . <http://webisa.webdatacommons.org/181675871> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/181675871> <http://www.w3.org/ns/prov#value> "Its principles empower people to establish highly productive environments providing for food, energy, shelter, and other material and non-material needs, including economic." . <http://webisa.webdatacommons.org/181675871> <http://www.w3.org/ns/prov#wasQuotedFrom> <permacultureactivist.net> .