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<http://webisa.webdatacommons.org/243825318>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.ca> .
<http://webisa.webdatacommons.org/prov/360073008>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/243825318> .
<http://webisa.webdatacommons.org/243825318>	<http://www.w3.org/ns/prov#value>	"A dechlorination unit is necessary because the most commonly used reverse osmosis membranes, thin film composite polyamide membranes, typically have low tolerance to oxidizing agents such as chlorine." .