About: http://webisa.webdatacommons.org/319962778

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	But rocks can also have vertical lines called ???desert varnish.??? Manganese and bacteria work together to cement clay and other particles to the rock's surface, forming streaks of black, brown, red, and orange.
http://www.w3.org/ns/prov#wasQuotedFrom	usmint.gov