<http://webisa.webdatacommons.org/353752731>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/197768717>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/353752731> .
<http://webisa.webdatacommons.org/353752731>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<econlib.org> .
<http://webisa.webdatacommons.org/353752731>	<http://www.w3.org/ns/prov#value>	"Positive checks are defined in Book I, Chapter 2, paragraph 9 as including every cause, whether arising from vice or misery, which in any degree contributes to shorten the natural duration of human life." .