About: http://webisa.webdatacommons.org/268279892

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	If you use resources other than the textbook (or the recommended textbooks)
http://www.w3.org/ns/prov#wasQuotedFrom	upenn.edu