About: http://webisa.webdatacommons.org/92725348

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	It may be made of various materials, including concrete, timber, natural rock, metal, automobile tires, shotcrete, and gabion baskets.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov