About: http://webisa.webdatacommons.org/211143277

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 black shale is a marine, organic shale that contains many different kinds of minerals, including phosphates.
http://www.w3.org/ns/prov#wasQuotedFrom	uky.edu