<http://webisa.webdatacommons.org/prov/175612663>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/231806604> .
<http://webisa.webdatacommons.org/231806604>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/231806604>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freepatentsonline.com> .
<http://webisa.webdatacommons.org/prov/202006279>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/231806604> .
<http://webisa.webdatacommons.org/231806604>	<http://www.w3.org/ns/prov#value>	"means and watering bowls; and FIG. 10 is a top plan view of the type of grating found to be most suitable for waste removal as well as animal comfort." .