<http://webisa.webdatacommons.org/353331849>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/135196331>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/353331849> .
<http://webisa.webdatacommons.org/prov/353697254>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/353331849> .
<http://webisa.webdatacommons.org/353331849>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/353331849>	<http://www.w3.org/ns/prov#value>	"According to the present invention, the foregoing and other objects and advantages are attained by offering an improved rod-in collapse method as a method for producing an optical fiber preform." .