<http://webisa.webdatacommons.org/6256691>	<http://www.w3.org/ns/prov#value>	"In this method, however, the filter system and other equipment must be replaced, resulting in difficulty in configuring the hardware." .
<http://webisa.webdatacommons.org/6256691>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/424396658>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/6256691> .
<http://webisa.webdatacommons.org/prov/318912312>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/6256691> .
<http://webisa.webdatacommons.org/6256691>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .