About: http://webisa.webdatacommons.org/112966513

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	They analyzed average annual quantities and expenditures using product descriptions, brand names, and package sizes; they also took into account whether items were on sale or purchased with a coupon.
http://www.w3.org/ns/prov#wasQuotedFrom	usablenet.com