<http://webisa.webdatacommons.org/prov/513682216>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/75339478> .
<http://webisa.webdatacommons.org/75339478>	<http://www.w3.org/ns/prov#value>	"Photography had been mostly confined to professionals who took formal portraits in studios." .
<http://webisa.webdatacommons.org/75339478>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/75339478>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<slashdot.org> .