<http://webisa.webdatacommons.org/239014780>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nga.gov.au> .
<http://webisa.webdatacommons.org/239014780>	<http://www.w3.org/ns/prov#value>	"Particulate silver, the ubiquitous photographic image-forming material both the nineteenth and twentieth centuries, will react dramatically to atmospheric contaminants such as hydrogen sulphide and peroxides." .
<http://webisa.webdatacommons.org/239014780>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/83684455>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/239014780> .