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<http://webisa.webdatacommons.org/prov/49350377>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/269905522> .
<http://webisa.webdatacommons.org/269905522>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/269905522>	<http://www.w3.org/ns/prov#value>	"Research materials include clippings, photographs and illustrations, correspondence, programs, and other documents." .