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<http://webisa.webdatacommons.org/prov/233839126>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/27283578> .
<http://webisa.webdatacommons.org/27283578>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/27283578>	<http://www.w3.org/ns/prov#value>	"FIG. 1 is a schematic drawing of a prior art water treatment system." .