About: http://webisa.webdatacommons.org/136346533

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	Leonardo seems never to have been entirely definitive, proposing six at one time, eight at another--and including black and white in each set.
http://www.w3.org/ns/prov#wasQuotedFrom	umn.edu