<http://webisa.webdatacommons.org/prov/508075612>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/176708370> .
<http://webisa.webdatacommons.org/176708370>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<stahlwerk-welding.com> .
<http://webisa.webdatacommons.org/prov/324463258>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/176708370> .
<http://webisa.webdatacommons.org/prov/404614569>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/176708370> .
<http://webisa.webdatacommons.org/176708370>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/176708370>	<http://www.w3.org/ns/prov#value>	"For the protection of tungsten electrode and melt, gases such as argon or helium or gas mixtures with non-oxidizing components are necessary." .