About: http://webisa.webdatacommons.org/11777089

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	A workbook, that is, a collection of all types of exercises, would be immensely valuable and, if each exercise concentrated on limited vocabulary and grammatical structures, fundamentally usable with any other textbook.
http://www.w3.org/ns/prov#wasQuotedFrom	ualberta.ca