About: http://webisa.webdatacommons.org/289600773

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	Local, natural stone, particularly granite, also may have high radon levels.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com