<http://webisa.webdatacommons.org/438018615>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<bu.edu> .
<http://webisa.webdatacommons.org/prov/7963075>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/438018615> .
<http://webisa.webdatacommons.org/438018615>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/438018615>	<http://www.w3.org/ns/prov#value>	"Electronic books have become increasingly popular with a number of vendors selling their products, including the different versions of Kindle, Nook, readers for iPhones and Blackberrys, etc.." .