About: http://webisa.webdatacommons.org/81041546

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	Soft stone, such as Marble, Travertine, Slate, Limestone, most Onyx, etc., with a thickness up to 1/2.
http://www.w3.org/ns/prov#wasQuotedFrom	stonewallplates.com