<http://webisa.webdatacommons.org/116808974>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wikibooks.org> .
<http://webisa.webdatacommons.org/prov/300550385>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/116808974> .
<http://webisa.webdatacommons.org/116808974>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/116808974>	<http://www.w3.org/ns/prov#value>	"The price is set by balancing many factors including supply-and-demand, cost, desired profit, competition, perceived value, and market behavior." .