About: http://webisa.webdatacommons.org/320858151

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	With regards to the author of the textbook, given that we do not have the context you have, it would not be very professional of us to comment on whether the author is correct or incorrect.
http://www.w3.org/ns/prov#wasQuotedFrom	usingenglish.com