<http://webisa.webdatacommons.org/prov/415167784>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/376544077> .
<http://webisa.webdatacommons.org/376544077>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/376544077>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/376544077>	<http://www.w3.org/ns/prov#value>	"When a chemical foaming agent is used, the kind thereof is not particularly limited, but inorganic foaming agents mainly containing sodium bicarbonate or the like are preferably employed since they are less corrosive to the mold." .