About: http://webisa.webdatacommons.org/434576772

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	For more than 600 million years, this region was covered by a sea and accumulated miles-thick layers of sediments, including limestone.
http://www.w3.org/ns/prov#wasQuotedFrom	nationalgeographic.com