About: http://webisa.webdatacommons.org/72082432

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	I have not read it, but I know that it introduced abstractions such as points, lines triangles, straightedge-and-compass constructions, and mathematical proof.
http://www.w3.org/ns/prov#wasQuotedFrom	advicegoddess.com