About: http://webisa.webdatacommons.org/445797316

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	emeralds and rubies is a visible difference without specifying the vision
http://www.w3.org/ns/prov#wasQuotedFrom	cogprints.org