About: http://webisa.webdatacommons.org/427745575

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	FIG. 6 is a schematic representation of validating the coupon, as by the invention, in the case the first buyer, after recommended other two new buyers, makes a new purchase;
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca