About: http://webisa.webdatacommons.org/86843955

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	Tests confirmed the material was a mixture of silicon and oxygen, calcium, aluminium and sodium -- or volcanic matter.
http://www.w3.org/ns/prov#wasQuotedFrom	heraldscotland.com