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<http://webisa.webdatacommons.org/prov/299623256>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/104895139> .
<http://webisa.webdatacommons.org/104895139>	<http://www.w3.org/ns/prov#value>	"and n=2-10, and X is a halogen; and b) detecting or determining the" .