About: http://webisa.webdatacommons.org/397773149

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	A direction perpendicularly intersecting both the Z- and Y-axes, i.e. a direction perpendicular to the plane of the figure, is taken as an X-axis.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com