<http://webisa.webdatacommons.org/prov/285223108>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/80198978> .
<http://webisa.webdatacommons.org/80198978>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<hammerwall.com> .
<http://webisa.webdatacommons.org/80198978>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/80198978>	<http://www.w3.org/ns/prov#value>	"Keep the unit clean of vegetation and other materials ." .