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<http://webisa.webdatacommons.org/prov/34116402>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/129028837> .
<http://webisa.webdatacommons.org/129028837>	<http://www.w3.org/ns/prov#value>	"Also, the polyphosphate is known to contribute to enhancing a tooth whitening effect since it can effectively remove stains formed on a surface of teeth, specially those formed of metal such as iron, calcium, magnesium, etc. from foods or working circumstances." .