About: http://webisa.webdatacommons.org/284833514

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	I think you are right that the second group is a smaller group than the first group, but I think that the second group is made up of the people who actually buy and read more than 1 book a year, whereas the first group is not. .
http://www.w3.org/ns/prov#wasQuotedFrom	mobileread.com