About: http://webisa.webdatacommons.org/375061787

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	ABCD is a square and the arcs centered at the vertices of the square and the radii, are all equal to the side-lengths of the square, (=a).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com