About: http://webisa.webdatacommons.org/435407587

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	If it gets too expensive, we either find a better way to get it,or find a substitute; whale oil went away because kerosene and other petroleum products became a better deal in multiple ways, for instance.
http://www.w3.org/ns/prov#wasQuotedFrom	robballen.com