About: http://webisa.webdatacommons.org/288950721

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	Greensand is a natural mineral harvested from ancient ocean floors.
http://www.w3.org/ns/prov#wasQuotedFrom	gardeningknowhow.com