About: http://webisa.webdatacommons.org/389181189

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	People still write anything in books or on the internet, but books are not always valued as references, and internet articles quite rarely, at least with scientists, unless they get some peer review or other qualification.
http://www.w3.org/ns/prov#wasQuotedFrom	mindat.org