About: http://webisa.webdatacommons.org/19393528

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	Today, e-textbooks offer much more, including links to assessment systems, homework management systems, and online learning communities.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com