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<http://webisa.webdatacommons.org/325278017>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.co.uk> .
<http://webisa.webdatacommons.org/325278017>	<http://www.w3.org/ns/prov#value>	"For decades, researchers have been developing techniques to more accurately and more quickly detect the presence and concentration of a chemical, a gas, a liquid, or other substance." .
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<http://webisa.webdatacommons.org/prov/421426024>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/325278017> .