About: http://webisa.webdatacommons.org/412592497

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	an arc of a circle, while the line to be measured is a chord, and equal divisions
http://www.w3.org/ns/prov#wasQuotedFrom	archive.org