<http://webisa.webdatacommons.org/prov/349627010>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/30747151> .
<http://webisa.webdatacommons.org/30747151>	<http://www.w3.org/ns/prov#value>	"Note that although filler material such as sand is discussed herein, those skilled in the art can appreciate that other types of material may also be utilized in accordance with the present invention." .
<http://webisa.webdatacommons.org/30747151>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/30747151>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .