About: http://webisa.webdatacommons.org/338657438

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	The color, shape, and size of river gravel can vary a great deal, typically depending on the area in which the gravel is found and the types of rock native to the area.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.net