About: http://webisa.webdatacommons.org/178679174

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 dollar cost might be zero, but there is a cost to the competitve advantage such a firm enjoys in attracting marginally more productive workers.
http://www.w3.org/ns/prov#wasQuotedFrom	econlib.org