<http://webisa.webdatacommons.org/prov/54208231>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/149418766> .
<http://webisa.webdatacommons.org/149418766>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/prov/214105746>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/149418766> .
<http://webisa.webdatacommons.org/149418766>	<http://www.w3.org/ns/prov#value>	" Once the pH is 10.0 or less, withdraw a sample for analysis. This sample should be analyzed by such methods as gas or liquid chromatography or by another similar method, to show that the reaction has proceeded as desired." .
<http://webisa.webdatacommons.org/149418766>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .