About: http://webisa.webdatacommons.org/47172181

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	Of course it covers the essential 4 operations but also covers topics such as telling the time, money, shapes and even square roots.
http://www.w3.org/ns/prov#wasQuotedFrom	mathsinsider.com