About: http://webisa.webdatacommons.org/15203109

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	Thus, while one type of hexahedron, such as a cube, may have quadrilateral faces, another type of hexahedron, formed by joining two tetrahedra, may have triangular faces.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com