<http://webisa.webdatacommons.org/153082186>	<http://www.w3.org/ns/prov#value>	"the presence of a base such as sodium hydride or potassium carbonate in a" .
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<http://webisa.webdatacommons.org/prov/49424464>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/153082186> .
<http://webisa.webdatacommons.org/153082186>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<patents.com> .