About: http://webisa.webdatacommons.org/415556693

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	oi thirty points, of which a, in Fig. 21, is an example; each being the intersection
http://www.w3.org/ns/prov#wasQuotedFrom	archive.org