About: http://webisa.webdatacommons.org/375211059

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	If you slice in the direction that I think you???re using, I believe that you get trapezoids except in the very centre, where you do get a triangle as a degenerate trapezoid.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com