About: http://webisa.webdatacommons.org/5492942

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	Now, see, that has a sensible solution to the weighted corners: create pockets which can be filled with whatever happens to be handy, such as sand or stones.
http://www.w3.org/ns/prov#wasQuotedFrom	boingboing.net