<http://webisa.webdatacommons.org/144056629>	<http://www.w3.org/ns/prov#value>	"Great artists possess a natural monopoly, in this sense, that the competition among them is not sufficient to limit the price of their work to the level of what is strictly necessary for them to execute it." .
<http://webisa.webdatacommons.org/144056629>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/374177632>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/144056629> .
<http://webisa.webdatacommons.org/144056629>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<econlib.org> .
<http://webisa.webdatacommons.org/prov/207693207>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/144056629> .