About: http://webisa.webdatacommons.org/147848674

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	The mirror is a monolithic piece of glass polished to near flatness, never deviating more than two millionths of an inch.
http://www.w3.org/ns/prov#wasQuotedFrom	skeptic.com