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<http://webisa.webdatacommons.org/195286841>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<packtpub.com> .
<http://webisa.webdatacommons.org/prov/283799631>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/195286841> .
<http://webisa.webdatacommons.org/prov/426420472>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/195286841> .
<http://webisa.webdatacommons.org/195286841>	<http://www.w3.org/ns/prov#value>	"The importance of layers, transparency, and other properties were then explained." .