<http://webisa.webdatacommons.org/prov/72114321>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/224617599> .
<http://webisa.webdatacommons.org/224617599>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/224617599>	<http://www.w3.org/ns/prov#value>	"The many excellent drawing and diagrams are a great help in explaining the concepts." .
<http://webisa.webdatacommons.org/224617599>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<amazon.com> .