<http://webisa.webdatacommons.org/392504222>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/392504222>	<http://www.w3.org/ns/prov#value>	"Besides, there is a problem where the corrosion occurs due to the remaining etching gas even for the easy-to-process metal such as Al." .
<http://webisa.webdatacommons.org/prov/440451917>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/392504222> .
<http://webisa.webdatacommons.org/392504222>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .