About: http://webisa.webdatacommons.org/388677679

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	Substrates were composed mostly of boulders, bedrock and smaller stones, sometimes sand or gravel.
http://www.w3.org/ns/prov#wasQuotedFrom	seriouslyfish.com