About: http://webisa.webdatacommons.org/315942862

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	Also known as tar pits, they are natural deposits of bitumen that leak up to the surface, filling the water above with all kinds of nasty substances including volcanic ash, hydrocarbons, sulphur, and metal compounds.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.co.uk