<http://webisa.webdatacommons.org/128303434>	<http://www.w3.org/ns/prov#value>	"A model is a tool used to illustrate a principle, to help understand it." .
<http://webisa.webdatacommons.org/prov/194265099>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/128303434> .
<http://webisa.webdatacommons.org/128303434>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/128303434>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<perl.org> .