About: http://webisa.webdatacommons.org/273045006

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	The distance function is a metric, and the product is a metric space.
http://www.w3.org/ns/prov#wasQuotedFrom	mathreference.com