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<http://webisa.webdatacommons.org/117622317>	<http://www.w3.org/ns/prov#value>	"These contaminants are released as gases such as H2S, COS, CS2,HCl, and HF during thermal ISRU processing with hydrogen or other reducing gases." .
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<http://webisa.webdatacommons.org/117622317>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<worldwidescience.org> .