About: http://webisa.webdatacommons.org/210782252

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	Today, we might still think of them as being magical, for the sum of each row, column and diagonal is a constant, the magic constant.
http://www.w3.org/ns/prov#wasQuotedFrom	maths.org