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<http://webisa.webdatacommons.org/prov/347677006>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/299884127> .
<http://webisa.webdatacommons.org/299884127>	<http://www.w3.org/ns/prov#value>	"Fluoride is a trace element, therefore only a small" .
<http://webisa.webdatacommons.org/299884127>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<slideshare.net> .