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<http://webisa.webdatacommons.org/20020918>	<http://www.w3.org/ns/prov#value>	"Antioxidants including vitamin E can promote lung cancer: study | Lifescript.com" .
<http://webisa.webdatacommons.org/prov/507841291>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/20020918> .