<http://webisa.webdatacommons.org/prov/385532068>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/312886821> .
<http://webisa.webdatacommons.org/312886821>	<http://www.w3.org/ns/prov#value>	"Thus, the reliability of such systems is quite low as they require frequent cleaning and repair." .
<http://webisa.webdatacommons.org/312886821>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/312886821>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .