About: http://webisa.webdatacommons.org/435091088

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	To reduce costs, the clay is preferably unrefined with a natural content of water, stones, gravel or other material, which is separated from the type of clay by sedimentation/filtration.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com