<http://webisa.webdatacommons.org/393316228>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wikipedia.org> .
<http://webisa.webdatacommons.org/393316228>	<http://www.w3.org/ns/prov#value>	"Here p is a vector of prices, and X is a vector of quantities demanded so that the sum of all pixi, is the total expense on goods X." .
<http://webisa.webdatacommons.org/prov/516246970>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/393316228> .
<http://webisa.webdatacommons.org/393316228>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .