<http://webisa.webdatacommons.org/152475722>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/152475722>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/354252240>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/152475722> .
<http://webisa.webdatacommons.org/152475722>	<http://www.w3.org/ns/prov#value>	"Publishers studying the effectiveness of their latest interactive e-textbooks are finding that the biggest challenge is getting professors" .