<http://webisa.webdatacommons.org/prov/437351177>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/9785567> .
<http://webisa.webdatacommons.org/9785567>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/9785567>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/9785567>	<http://www.w3.org/ns/prov#value>	"Moreover, in the dual lumen or channel systems described below the polymer may include alginate, while the plug forming material can be, for example, a plug forming cross-linking agent such as calcium." .