About: http://webisa.webdatacommons.org/55767997

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	Supplements are largely designed to make things easy for students, which is why they sell well, and mostly eliminate the ambiguity from materials.
http://www.w3.org/ns/prov#wasQuotedFrom	blogs.com