About: http://webisa.webdatacommons.org/137248798

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	In the prior art blocks, this last consideration has often necessitated the use of differently shaped or sized blocks to be used at curves or corners, depending on whether they are concave or convex.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au