<http://webisa.webdatacommons.org/444350534>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.co.uk> .
<http://webisa.webdatacommons.org/444350534>	<http://www.w3.org/ns/prov#value>	"The optional source of additional silica may also be an aqueous solution of an alkali metal silicate, especially sodium silicate." .
<http://webisa.webdatacommons.org/prov/59425065>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/444350534> .
<http://webisa.webdatacommons.org/444350534>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .