About: http://webisa.webdatacommons.org/359362068

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	In the past piles have been made from wood and other naturally occurring materials.
http://www.w3.org/ns/prov#wasQuotedFrom	excavationandgroundwork.com