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<http://webisa.webdatacommons.org/153978555>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<quizlet.com> .
<http://webisa.webdatacommons.org/153978555>	<http://www.w3.org/ns/prov#value>	"Prevents shampoo from lathering ??? ??? ??? If water contains certain salts of calcium, magnesium and other metals it is classified as: Hard water ??? ??? ??? What is the name given to purifying water by passing it through a porous substance?" .