<http://webisa.webdatacommons.org/prov/447138768>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/15187051> .
<http://webisa.webdatacommons.org/15187051>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/15187051>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/15187051>	<http://www.w3.org/ns/prov#value>	"This invention relates to a method and apparatus for determining maintenance due times for construction machines and other machines based on the operating status thereof." .