About: http://webisa.webdatacommons.org/27062091

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	Since losing a corner is a cause for concern, the three points are required to closely approximate the vertices of a right triangle (say 90??????1???).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com