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<http://webisa.webdatacommons.org/prov/374102246>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/287204462> .
<http://webisa.webdatacommons.org/287204462>	<http://www.w3.org/ns/prov#value>	"The counter electrode must be made of a corrosion-resistant metal such as stainless steel, titanium, nickel-plated steel or other metal which will not be attacked by the alkalinity of wet concrete." .
<http://webisa.webdatacommons.org/287204462>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .