<http://webisa.webdatacommons.org/prov/479156183>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/141204590> .
<http://webisa.webdatacommons.org/141204590>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.co.uk> .
<http://webisa.webdatacommons.org/141204590>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/141204590>	<http://www.w3.org/ns/prov#value>	"A liquid, such as saline solution, can be used, but liquids are less preferable to gases because they change the optical properties of any endoscope inserted into the main inflatable chamber 13." .