About: http://webisa.webdatacommons.org/300921815

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	??? JiaGai -- It means what it means -- Clay is just a form of earth, mud is earth saturated with water.
http://www.w3.org/ns/prov#wasQuotedFrom	threekingdoms.com