About: http://webisa.webdatacommons.org/282083280

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	Most people said to layer them in some sort of container, separating the layers with sand.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com