<http://webisa.webdatacommons.org/168738117>	<http://www.w3.org/ns/prov#value>	"Single-element graphite furnaces are useful, for example, in performing analyses of food or drinking water where the government requires that contaminants such as arsenic, lead, mercury, or cadmium be below a certain concentration." .
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<http://webisa.webdatacommons.org/prov/65909195>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/168738117> .
<http://webisa.webdatacommons.org/168738117>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .