<http://webisa.webdatacommons.org/447049923>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<familyhandyman.com> .
<http://webisa.webdatacommons.org/447049923>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/426827237>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/447049923> .
<http://webisa.webdatacommons.org/447049923>	<http://www.w3.org/ns/prov#value>	"Potassium permanganate is a purple oxidizing chemical that is added to the untreated water to maintain the manganese greensand filter." .