About: http://webisa.webdatacommons.org/14688255

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The share of income spent on food purchased in grocery stores and other retailers declined from 14.1 percent in 1960 to 5.5 percent in 2007.
http://www.w3.org/ns/prov#wasQuotedFrom	usablenet.com