About: http://webisa.webdatacommons.org/32486519

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	Medieval econ says that one person/nation can grow wealthy only at the expense of others because wealth is limited and trade is a zero sum game.
http://www.w3.org/ns/prov#wasQuotedFrom	economist.com