<http://webisa.webdatacommons.org/98345897>	<http://www.w3.org/ns/prov#value>	"The advantage of the mix of the invention is that it contains no heavy metals such as lead or barium and thus is not toxic." .
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<http://webisa.webdatacommons.org/prov/85233327>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/98345897> .