<http://webisa.webdatacommons.org/prov/459891705>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/116246593> .
<http://webisa.webdatacommons.org/116246593>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<sc.edu> .
<http://webisa.webdatacommons.org/116246593>	<http://www.w3.org/ns/prov#value>	"It must be made of uniformly sized quartz sand or gravel that is free of clay, silt or other material that would have a harmful effect;" .
<http://webisa.webdatacommons.org/116246593>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .