<http://webisa.webdatacommons.org/prov/363227575>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/172912250> .
<http://webisa.webdatacommons.org/172912250>	<http://www.w3.org/ns/prov#value>	"But he predicted that there will be problems even in the medium term, including a shortage of people willing to run such stores as customers migrate to more convenient formats." .
<http://webisa.webdatacommons.org/172912250>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<upenn.edu> .
<http://webisa.webdatacommons.org/172912250>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .