<http://webisa.webdatacommons.org/prov/374102239>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/108923508> .
<http://webisa.webdatacommons.org/108923508>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/108923508>	<http://www.w3.org/ns/prov#value>	"Also, anticorrosive construction was proposed for a coupling to have a nonferrous metal, such as stainless steel, layer on the inner marginal edge of the iron coupling arranged to be in contact with the nonferrous metal pipe." .
<http://webisa.webdatacommons.org/108923508>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .