<http://webisa.webdatacommons.org/prov/173186452> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/318690068> . <http://webisa.webdatacommons.org/318690068> <http://www.w3.org/ns/prov#value> "Fuel, except to cook his Food, is then unnecessary; the sun is his fire, and many of the fruits are sufficiently cooked by its rays; while Food generally is more various, and more easily obtained, and Clothing and Shelter are wholly or half unnecessary." . <http://webisa.webdatacommons.org/318690068> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/318690068> <http://www.w3.org/ns/prov#wasQuotedFrom> <about.com> .