About: http://webisa.webdatacommons.org/50477387

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	Other elements such as water and clay are usually added to make the sand more compact and solid.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com