<http://webisa.webdatacommons.org/prov/453968903>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/352721557> .
<http://webisa.webdatacommons.org/prov/85233328>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/352721557> .
<http://webisa.webdatacommons.org/352721557>	<http://www.w3.org/ns/prov#value>	"Many of the glazes used by Richards included chemicals and metals such as lead, selenium and uranium." .
<http://webisa.webdatacommons.org/352721557>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<markhillpublishing.com> .
<http://webisa.webdatacommons.org/352721557>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .